Convert objective c to swift jobs
I am in need of a skilled expert to develop and set up a computer vision program to process a batch of SD video cards. This program will undertake a couple of key tasks: - Image Classification - Object Detection In terms of output, I require the processed videos to generate a Metadata file, which ideally is formatted into an Excel or CSV file. This data should include details such as date, time, classification, and direction. While I do have an Azure account for hosting and I am comfortable with it, I am also open to suggestions on which programming language would be the best fit for this project. The ideal freelancer for this task should possess the following skills and experience: - Proficiency in Python, C++, or Java - Familiarity with Microsof...
...need of a skilled, software engineer who enjoys a fun challenge to develop and build a new software. The software will perform brute-force calculations to uncover various physics and maths field equations, as well as graphical rendering. The interactions of all the objects will also be rendered. **Key Requirements** - Discover a Range of Physics Field Equations: Your main task will be to set up the software to uncover equations from classical mechanics, electromagnetism and quantum mechanics. However, it should also be able to work with just mathematical equations. - Graphical Rendering: The software should not just give results in text form, but should also be able to visually represent the outcome. We are looking to have a clea...
I have a simple powerbi poject. I have a dataset in excel based on which i need a table in the dashboard. I also require a filter to filter the rows The filter should be based on 3 columns in the table. In the dataset a user can be in more than one column. for example lets say the 3 columns are A, B and C. the values can be A, B, C or blank in those columns. user X had values A, B and blank in the columns A, B and C In this case if you filter the data using value A from the dropdown, it should show user X also if you select B. However if you select value C in the filter the user/row will not be present.
I am in need of a data mining expert proficient in Python, machine learning, and Selenium to facilitate a data mining project. If you are interested, so there would be 2 contract fix rate $50/country flow, and $3-5/hr for code's maintainance. Depends on your profile’s experience. $5/script for easier works (like scrap-data transferring between GS&SQL), Purpose of the project: The primary objective is to extract valuable information from a large set of data. The specific type of data to be mined will be shared with the successful candidate. - Skills and Experience: - Proficient in Python - Hands-on experience with Selenium - Thorough understanding of machine learning algorithms - Experience in handling large sets of data - ...
...legal aid in filing an Out of Time appeal for a civil contempt case in the state of Georgia, where I am faced with the crisis of failing to comply with a court order. Given the circumstances, my objective through this appeal is to attain a reduction in punishment. In this endeavor, your expertise plays an essential role. Key Qualifications: - A competent understanding of Georgia state laws. - Prior experience filing Out of Time appeals (preferably in civil contempt cases). - Detailed comprehension in identifying and analyzing associated legal nuances. I am glad to report that I have compiled all the requisite documentation pertaining to my case, ready to be thoroughly reviewed and used for the appeal. Your proficiency in creating a compelli...
We are seeking an expert with proficiency in both FoxPro and C#. The task at hand involves preparing and sending invoice data to a C# web service. Key tasks: - Extract invoice data from FoxPro, including: - Customer information: Name and Phone number - Product details: As the specific details were not provided, we are expecting someone with the ability to handle a variety of product-related data - Invoice totals Ideal skills and experience: - Proficient in FoxPro and C# - Previous experience with invoice data handling - Excellent attention to detail and data accuracy - Quick turnaround time This project requires a deep understanding of both FoxPro and C#, as well as experience in handling and preparing invoice data in a fast-paced e...
...professional assistance to craft a compelling PowerPoint pitch deck and a detailed business plan for my Dry Ice Cleaning business. The main objective is to secure necessary funding. Key Elements: - A vivid Luxembourgish market analysis highlighting the potential of a dry ice cleaning business targeted towards individuals. - Comprehensive financial projections to present a clear vision of the venture's profitability. - A robust marketing and sales strategy to effectively reach and appeal to potential customers in Luxembourg. Ideal Skills: - Proficiency in business planning and financial forecasting. - Profound knowledge in market analysis. - Creative problem solving and strategic planning abilities. - Exceptional PowerPoint presentation an...
I'm in need of a skilled web designer to create a portfolio site that doesn't just showcase my work effectively, but also helps in attracting new clients. Here are some specifics on what I need: - The design should have a professional, clean and modern look to represent my work - The site should have a Contact Form that clients can easily use to reach out to me - A Testimonials section is crucial to build trust and credibility with potential clients - An Image Gallery is also desired to visually showcase my projects Ideal candidates should have a strong portfolio demonstrating their web design skills, especially in creating portfolio sites that convert visitors into clients. Understanding of UX/UI principles to ensure the ...
...can convert my PDF documents to Word. I need the converted files to be compatible with Microsoft Word 2016 and editable. Key requirements: - Retain the original formatting: The converted Word documents should maintain the same layout, font styles, and images as the original PDFs. - Text with images: The PDF files are not overly complex, but they do contain images alongside the text. These images need to be accurately converted into the Word document. - Locked for editing: I want my documents to be editable, so please ensure they're not locked for editing. Ideal skills and experience for this job: - Proficient in PDF to Word conversion tools such as Adobe Acrobat Pro or online converters. - Strong understanding of Microsoft Word 2016'...
I'm looking for a skilled website developer to create a 1-5 page portfolio website. Key Requirements: - Portfolio Website: The primary objective of this website is to showcase my work as a professional. - Custom Design: I would like a unique, clean and modern design that represents my work elegantly. - Mobile Responsiveness: The website should be fully responsive and optimized for all devices and screen sizes. - SEO-Friendly: The website should be optimized for search engines to drive organic traffic. - Easy to Update: I would prefer a content management system that allows me to easily update and manage the website in the future. Skills and Experience: - Proven experience in developing portfolio websites. - Proficiency in HTML, CSS, JavaSc...
I have a simple PDF file that I would like to convert to a Word document. The main reason for this conversion is so that I can make edits to the text. Key Requirements: - Conversion: The PDF document contains only text, no images, graphs, or complex formatting. The primary goal is to have the text in a Word document format. - Preservation of Font Style and Formatting: It is essential that the converted Word document retains the original font style, size and layout. Ideal Freelancer: The ideal freelancer for this project would have proficiency in PDF to Word conversion tools and thorough understanding of font styles and formatting in Microsoft Word. Please bid with an overview of how you plan to handle this project. Thank you.
I'm looking for an experienced WordPress developer to convert my existing HTML website into a WordPress theme. Key Requirements: - Convert my existing HTML website to a WordPress theme using a specific theme I've chosen - Ensure that all current functionalities are retained and properly integrated Additional Information: - I don't need any custom functionalities or plugins integrated - All the content for the website is ready, so the task primarily involves the conversion process. Ideal Skills and Experience: - Proven experience in HTML to WordPress theme conversion - Familiarity with a wide range of WordPress themes - Strong attention to detail to ensure all functionalities are properly integrated.
I am seeking a professional with proficiency in Solidworks to create an assembly animation. The primary objective of the project is to demonstrate the basic functions of a particular machine. Ideal Skills and Experience: - Proficient in creating assembly animations on Solidworks - Able to depict basic machine functions accurately - Experience in demonstrating simple operation processes inside machines. Main Project Tasks: - Design a Solidworks assembly animation that showcases basic machine functions - Deliver a clear and polished animation that effectively communicates machine operation. Please note, a strong portfolio that includes related past projects would be highly advantageous for this role. Looking forward to working with you!
I need an experienced developer to convert a Figma design ( 2 layouts ) into HTML in just 2 days. Key Requirements: - Convert a provided Figma design into HTML using only "custom CSS, JS, and Bootstrap." - Ensure all elements are correctly translated - Ensure the HTML is responsive and works across multiple devices Ideal Skills: - Proficient in Figma and HTML - Experience in responsive design - Can work quickly and efficiently to meet the tight deadline Please note: I will only pay if the conversion is 100% working properly within 2 days.
...CV and enhance my existing one to cater specifically to sales roles. Key Requirements: - Crafting a new CV that is tailored for job applications in the sales industry. - Enhancing my existing CV to better highlight my sales expertise and accomplishments. - Ensuring the CV is structured appropriately and is aesthetically appealing. - Using engaging language to make my CV stand out to potential employers. Ideal Skills: - Proven experience in writing CVs, particularly for sales professionals. - Strong understanding of the key requirements and skills sought after in the sales industry. - Excellent writing and communication skills. - Attention to detail and the ability to showcase my achievements effectively. - Knowledge of ATS (Applicant Tr...
...using OCR technology. This app must be programmed to convert handwritten notes into editable typed text. The primary goal is to aid users in organizing their notes and enhancing productivity. Key requirements: - The app should be developed for both iOS and Android platforms. - The OCR technology implemented must be robust and accurate in converting a variety of handwriting styles. - The converted text must be editable, allowing users to further organize and work with the notes. - Consideration for user-friendly interface design is highly valued. Ideal candidate: - Proficient in app development for both iOS and Android. - Experienced in implementing OCR technology in previous projects. - Skilled in designing user-friendly interfaces. - Ability to tes...
...environment May supervise staff Perform other duties as assigned Skills Required Must be a U.S. Citizen Minimum 5-10 years experience Possess a solid understanding of object-oriented software Ability to learn desktop software development or web development technologies, tools and methodologies Possess a solid understanding of applicable development platforms such as Microsoft Stack or AWS Knowledge of building applications and user interfaces (e.g. Javascript, HTML/CSS, XML, C#, VBA and VB.NET) and/or databases (e.g. SQL) is desirable Proficient in all MS Office applications Demonstrated ability to creatively solve technical challenges Possess excellent communication and collaboration skills Salary Range: $98,000 - $125,000/Year, DOE Education A bachelor&rsq...
...looking for a talented writer to create instructive and educational content on various technology topics for my radio show. Here's a breakdown of what I need: - **Objective:** The main aim of this writing project is to inform the audience. - **Topics:** You'll be focusing specifically on topics related to technology. This could include anything from the latest tech trends, to informative pieces about specific devices or software. - **Tone:** The writing should be instructive and educational. It's essential that the content is easy to understand and engages the listeners, while simultaneously providing them with valuable insights and information. Ideal candidates for this project would have a strong grasp of technology, excell...
### Query: I'm looking to create a WebAR experience without incurring expensive monthly costs. Could you suggest some cost-effective solutions and the necessary requirements for implementation? ### Requirements: 1. **Open-source Libraries**: - ****: - Technology: JavaScript - Compatibility: WebXR, WebRTC - Cost: Free - **MindAR**: - Technology: JavaScript - Functionality: Marker-based AR - Cost: Free 2. **Frameworks**: - **A-Frame**: - Integration: - Cost: Free - Technology: Web-based framework 3. **Combination Solutions**: - ** with WebXR**: - Technology: JavaScript - Functionality: 3D graphics rendering, AR integration - Cost: Free 4. **Commercial Platforms
Seeking a creative video production team to deliver a high-quality advertisement video, similar to this one (). Objective: • To introduce a new product by highlighting its key functionalities. Ideal Skills: • Video production • Video editing • Advertising and marketing Experience: • Proven experience in advertisement video creation is required. • Familiarity with product demo videos is a plus. • Samples of past projects will highly support your application. I anticipate an engaging video that not only introduces the product but also effectively illustrates its key features. Your creativity is the limit!
...seasoned freelancer to manage a Google ads campaign to increase both my website traffic and generate more leads. Here's what you should ideally have: - Proven experience in Google Ad campaigns - Expertise in audience targeting, specifically working professionals aged 25-40 - Understand local ad targeting, as this campaign is focused on a specific city or state - Can convert ad viewers into potential leads A comprehensive understanding of Google Ads algorithms, platform, ad optimization, and local targeting is a must. Bonus if you've worked in generating leads for businesses. Your goal will be to ensure our ads reach the appropriate target audience within our specified geographical location, thus maximizing opportunities for website traffic and lea...
I'm looking for a skilled developer to create an API that can seamlessly integrate with our FACTUSOL program to generate and print labels on EPSON machines (CW-C6500Ae and TM-C7500) with a specific template. Key Deliverables: - Development of an API that can interface with FACTUSOL to collect necessary data for label generation. - Creation of a template for the labels that includes product information like name, description, barcode, SKU, price, and quantity. The template should also incorporate our company logo. - The system should be able to convert the generated labels into PDF format for printing on the specified EPSON models. Ideal Skills and Experience: - Proficiency in Java, Python, and C# for the API development. - Prior experience i...
...seeking a skilled and experienced C# developer with expertise in the .NET framework. The primary task at hand is to implement advanced background job features within the project, with a specific focus on Asynchronous Processing and Queue Management. Key Deliverables: - Implement Asynchronous Processing: The developer should be able to design and implement a system where tasks can be processed concurrently, allowing for better performance and resource utilization. - Implement Queue Management: The project requires a developer who can set up a robust queue management system, ensuring tasks are executed in the correct order and at the right time. Specific Requirements: - Maximum Queue Size: The system needs to be designed with scalability in mind. You should...
The Role: We are seeking an Application Developer to join our strong and growing Information Technology group at the California Association of REALTORS® (C.A.R.). This person will work in a team to design, develop, and support mission critical applications. The ideal candidate would be an expert in .NET MVC development using C#, and have experience developing and interfacing with SQL Server databases. The Application Developer creates, maintains, supports, extends and operates computer applications that serve the C.A.R. membership, the general public, and C.A.R. internal staff. The application portfolio is very broad ranging from communication tools to mobile applications, internal data processing applications, database applications, and applications that ...
I'm in need of a code expert who has experience in creating APIs for Autodesk Revit in C#. This project involves integrating a queue system into the API that works with all versions of Revit. Key Requirements: - Expertise in C# and Autodesk Revit API: You should have a deep understanding of C# programming language and experience working with the Autodesk Revit software. - Queuing System Development: The main task in this project is to design a queue system that allows users to create, manage tickets and get notifications and alerts. Your task will be to: - Develop an API that works with all versions of Autodesk Revit - Implement functions for creating, modifying and deleting elements in Revit - Design and integrate a user-friendly queue sy...
Task 1: Comprehensive Five-Year Projection Model and DCF Analysis for Marico Objective: Construct a five-year financial projection model and perform a Discounted Cash Flow (DCF) analysis for Marico, leveraging historical data from their Investor Relations (IR) presentation and Annual Report. This will include a thorough examination of revenue and cost factors along with balance sheet and cash flow analysis. Task 2: Potential Acquisition or Investment in the 'Foods' Category by Dabur Objective: Draft two to three slides outlining the opportunity and rationale for Dabur's potential acquisition or investment in the 'Foods' category. Suggestive Approach for Task 1 1. Data Collection: - Gather historical financial data from Marico's IR ...
I did convert my existing old website (built 2004) to a responsive html5 website. As a first step I did convert the Homepage () and the into a responsive page without changing the design (look and feel). But the Homepage had only two (horizontal) Navigations. Other pages have an additional vertical navigation on the left side of the page - that needs to be integrated into the responsive navigation. Additional Notes: * Please don´t bid if you don´t have (and can show me) experience with this kind of work; I would like to see working examples beforeward; * To show that you've read and understand the project requirements, please include the phrase "hello pk" in your bid. Failure to include this will elim...
Hi Josephus C., I noticed your profile and would like to offer you my project. We can discuss any details over chat.
...need of a competent software developer skilled in the programming languages Java, C#, or Python. This upcoming project specifically involves creating a software that generates QR codes. For this project, you should: -Key Responsibilities: 1. Design a software that efficiently creates QR codes. 2. Ensure the QR codes generated can encode URLs. -Required Skills and Experience: 1. Proficient in Java, C# or Python programming languages. 2. Familiar with QR Code generation and URL encoding. The primary function of the encoded URL in the generated QR codes is to redirect users to a particular website. Therefore, your software should guarantee the QR codes created, when scanned, redirects users smoothly and swiftly to the website in question. If you have t...
We're launching a promo...launching a promotional campaign for a spoon and require experienced actors who are comfortable with, and can execute, absurd humor. The objective of this joke advert is to: • Create an engaging, funny, and memorable way to promote our product: the spoon I'm replicating the old style infomercials of the 90s so acting needs to be a bit wooden and feel cheep The ideal candidate should have: The ability to use a phone (on its side in a tripod or propped up somehow) and film themselves firstly struggling to use a spoon and another take using a spoon perfectly like its the easiest thing they have ever done. also deliver some lines. I'll be looking to use the footage from the phone, so make it t...
I'm looking for someone to convert my 1-10 page PDF document into a Word file. Here are the project specifics: - **Word File**: The final Word file should maintain the original formatting of the PDF. - **Content**: The PDF is text-only, with no images or graphics that need to be transferred to the Word document. The ideal candidate for this project should have: - Experience in PDF to Word conversions. - Proficiency in preserving original formatting during conversions. - Attention to detail to ensure all text is accurately transferred. Please bid if you're confident in handling this task with precision and meeting the formatting requirements.
Hi Sonali C., I noticed your profile and would like to offer you my project. We can discuss any details over chat.
...executing > Resource compilation failed (Failed to compile values resource file C:UsersrabikAndroidStudioProjectsMissWordsappbuildintermediatesincrementaldebugmergeDebugResourcesvaluesvalues.xml. Cause: : Cannot invoke "()" because the return value of "()" is null). Check logs for more details. Key Project Details: - The values resource file is failing to compile, leading to the overall compilation failure. - The issue appears to be related to a resource within the values file. - The project is in Kotlin and involves Android development. Skills Needed: -
I'm in search of a professional in deep learning, preferably a PhD, who can serve as a mentor for various aspects of neural network design, s...be: - Preparing very specific ML/NN live lessons for me - Helping me debug my code if I am stuck - Suggesting me better ways of doing things - Helping me to install 3rd party software on Windows - Helping me to run open source projects downloaded from GitHub - We will work mainly in C#, C++ - Python will be optional The ideal candidate should possess: - A PhD in the field of deep learning - Previous experience in designing neural networks - Strong communication skills to effectively explain complex concepts in a clear manner Don't bid if - you have no research experience - you have no journ...
I am seeking a talented and creative designer to develop an iconic logo for my fitness app. The logo should be visually striking yet simple enough to be effectively used as an app icon. This logo will be a key component of our brand identity, representing our innovative fitness app that rewards users for their physical activity with in-app currency that can be spent on prizes, vouchers, and more. Project Objectives Create an Iconic Logo: The primary objective is to design a logo that is both eye-catching and iconic, easily recognizable and memorable. Simplicity and Versatility: The logo should not be overly detailed to ensure it looks great at various sizes, especially as a small app icon on mobile devices. Brand Representation: The logo shou...
...looking for a top-tier Android developer in Delhi, with fluency in Java, Kotlin, and C++. The project scope is to develop an Android application from scratch for an industry outside of healthcare, education, or e-commerce. Key Responsibilities: - Develop a brand new Android application, focusing on high-quality coding and user experience. - Work closely with me to understand the project requirements and provide your expert insights. - Implement a responsive and secure backend system to support the app's functionality. Ideal Skills: - Proficiency in Java, Kotlin, and C++. - Proven experience in developing Android applications from scratch. - Understanding of app design principles and user experience. - Ability to create a responsive and se...
I'm looking for a skilled designer to convert my current JPEG logo into a high-quality vector format while preserving the original colors. Key Requirements: - I would need the logo in different sizes for various applications. - It's important to keep the original colors intact during the vectorization process. Additional Information: - I'd prefer someone with experience in logo design and vectorization. - It would be great if you could provide a portfolio of similar projects you've successfully completed. - The ability to work efficiently and deliver on time is a must.
I have a basic school project that requires inputting provided data into Microsoft Excel. Here are the specifics: - You will be provided with a simple dataset. - The main objective of the project is to input data from this dataset accurately based on the given instructions. The ideal freelancer for this project would be someone who is: - Proficient in Microsoft Excel. - Detail-oriented to ensure accurate data input. - Able to follow provided instructions carefully.
Your job is to recreate the functionality of ONE PAGE only We need you to convert to Vue the following page: Attached there is a somewhat working "local version" in a zip-archive. It will be easier for you to use this to debug / reengineer. Also attached please find a Vue-archive. Unpack, install and go to localhost:3000/Flyer. There you see an example of how your work could look. Use this as your template. Deliverable: - Working Vue-package based on the zip-package provided, which - replicates the behaviour from under localhost:3000/Briefumschlaege - A click on the "In den Einkaufswagen" button adds an item from the respective Card in your page to the Cart as it does already under localhost:3000/Flyer
...driving traffic to my website, and generating leads. - **Target Audience:** My target demographic for this campaign is young adults and parents. Your responsibilities will include: - Crafting and executing a comprehensive social media strategy that aligns with my goals. - Regularly monitoring and refining campaign performance based on KPIs. - Developing engaging content that resonates with both young adults and parents. - Implementing effective lead generation tactics to convert engagement into tangible results. The ideal candidate should have: - Proven experience in social media marketing, with a portfolio that demonstrates success in similar projects. - Excellent understanding of Facebook, Instagram, and Twitter, along with the ability to tailor content ...
I'm seeking a part-time international relations observer with a focus on political developments in Nor...written reports on the observed political scenarios. - Offer insightful analysis and interpretation of the events to facilitate better understanding. Ideal Candidate: - A background in international relations, political science, or a related field. - Proven experience in political analysis, observation, and reporting. - Excellent writing skills, able to craft clear, concise, and engaging reports. - Strong understanding of political systems, dynamics, and trends in North America. - Ability to work independently, with a keen eye for detail and accuracy. Your reports will form the basis of our strategic decision-making, so it's crucial that they are well-in...
**Project Objective:** We are looking to automate the management of absences within our company using VBA Excel. The goal is to simplify and optimize absence tracking, reporting, and data analysis to save time and improve accuracy. **Project Description:** The project involves developing an automated solution in Microsoft Excel that includes: 1. **Absence Data Entry:** - Interactive forms for entering absences (sickness, vacations, authorized absences, etc.) - Data validation to ensure accuracy and consistency. 2. **Automatic Absence Calculation:** - Automatic calculation of absence days per employee. - Tracking different types of absences and their quotas (paid leave, sick days, etc.). 3. **Report Generation:** - Creation of weekly, mo...
I'm in need of a freelancer who can accurately convert a digitally created PDF to a Word document. This project involves not just copying and pasting the content, but ensuring that the formatting is well preserved. Key requirements for the project: - The purpose of this conversion is threefold: to allow for edibility, to maintain the original formatting, and to easily copy the text. - The PDF file is made up of digitally created documents, not scanned images. - You will be provided with a specific template that the Word document must adhere to. Ideal skills for this project include: - Proficiency in PDF to Word conversion - Attention to detail to ensure that the formatting is consistent - Familiarity with custom formatt...
...commands, utilizing avatars, and incorporating a chatbot. - The main features of this project are: - Voice Control: The app should be able to comprehend user's voice commands. - Avatars: It should include a feature that uses avatars for user interaction. - Chatbot: The application should integrate a chatbot to handle user interactions. - The application should be compatible with web browsers, ensuring it can be accessed and operated smoothly without the need for a separate mobile application. - The most important aspect of this project is the bidirectional voice conversion functionality. It should seamlessly convert speech to text and vice versa. Ideal Skills and Experience: - Proven experience in developing AI-driven web ...
I need an experienced freelancer to convert 35 PDFs of workplace policies to Word. Key Tasks: - Conversion: These PDFs are under an old company name; I need these PDFs converted to Word documents, maintaining the standard business formatting. - Editing: I then need the old company name to be replaced with the new company name throughout the text and in the footer. This includes ensuring that all references to the old company name are replaced in the text. Requirements: - Proficiency in PDF to Word conversion and editing. - Strong attention to detail to ensure all instances of the old company name are replaced with the new company name. - Knowledge of standard business formatting in Word. - Experience in updating large number...
Create an auto process that will run every minute do the below: 1) Will open Google Chrome. 2) Pull from external endpoint JSON (I will provide) a list of url...of urls and enter each one of them in a new window. 3) In case one of the websites is showing "Dangerous Alert" (or doesnt load from any reason) , an email alert + SMS alert should be sent to multiple contacts that I will provide. Some points and clarifications: A) It can be done with extention, desktop software or any other auto script B) It will run every 60 seconds C) It will be installed on 3 RDPs D) I will need help to find and connect to SMS service and RDP service as I dont know reliable services that can be registered and approved fast. Please provide me a detailed solution how you w...
I'm in need of an individual with skills in web research, specifically revolving around YouTube. My objective is to verify the owner of a single YouTube account by uncovering the following account owner details: - Name - Email Address - Location - Proof of post timestamps The ideal person for this project will possess a knack for investigative research and have familiarity with YouTube's platform. Previous relevant experience is an added advantage. Your responsibility will entail confirming the above information and providing evidence where needed, particularly the time and date of past postings.
I need to convert a conceptual ERD to a logical ERD (See attached image below). The logical ERD should only include primary and foreign keys. I need the prpject ready by 25th/26th Skills and experience needed: - Proficient in database design, specifically with MySQL - Understanding of primary and foreign keys - Familiarity with normalization forms - Ability to convert conceptual ERD to a logical ERD
