Questions tagged [database-design]
For questions about structuring the data within a database. How to lay out tables, whether to use a relational DB or not, etc.
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How to restructure a schema in order to support conditional (one of two tables) relations
I've been stuck on this for a while now so I decided to ask for some help.
My SetTemplate needs to EITHER be connected directly to exerciseTemplate OR connected to exerciseTemplate through a ...
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How to design user-defined ordering of items?
I've got a site (here) that lets users publish labs. I'm looking at adding a feature where users can customise the order that their labs appear in. To be clear, I mean that they can manually control ...
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Linking records through multiple tables?
I'm writing a game server. Similar to the Sims. Players can own furniture items they purchase from the catalog. There can also be rooms. Players can be in a room. A room can have furniture items of ...
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What is an optimal system design for tracking product views per user that is scalable?
I have a web application that contains products and users. There are 10,000+ products and 100,000+ users to give a sense of the scale that's required.
For some application specific reasons, I need to ...
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Does it make sense to use a graph database (Neo4j) for a diagramming app?
I am developing a diagramming application and want to optimize operations with the Nodes and Relations of the diagram. Currently, I am using a relational database with tables for diagrams and nodes. ...
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Designing a flexible and comprehensive restaurant menu database schema?
I am working on developing a MySQL database schema for a restaurant menu system inspired by platforms like DoorDash, UberEats, and Yelp. My aim is to design a schema that is flexible and can handle ...
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Advice for database design and approach
I ask this to learn from experienced DB designers/architects. I need a high-level overview, I'm not interested in the specific tools for now. Rather, I'd like opinions on how you would approach this ...
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Ensuring unique indexes on nosql datastores [closed]
I am building a User Service. User would be able to register with emailId or phone no. Upon successful registration, they can choose a username (which should be unique)
It is easy to do on SQL ...
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Best Practices for Storing Operational Hours Extending Past Midnight in MySQL
I'm building a PHP application to manage business operating hours, including cases where the closing time extends past midnight. I'm considering various ways to store these hours in MySQL and need ...
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Would it be a good design to have multiple repositories for one entity?
I am working on a project. I have designed the codebase all the way from the scratch. Basic thing is the project is divided in individual modules. The modules represent one complete part of a business ...
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Need advice on approaches to saving data
The following code(JSFiddle here) is a grid-based code where I'm performing the following steps:
I’m moving blue boxes from left to right (on the grid) after clicking Move Text Content! button. Here ...
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Database Modeling for Application with Many Integrations
I’m working on an application that requires many 3rd-party integrations. I’m using Postgres to store these API responses but am having trouble for a number of reasons.
These objects are frequently ...
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Where to store config when using a external binary in a web service?
I'm making a vpn service that can be controlled through admin web page.
So I have a web page that consists of front-end page and a backend API + DB.
In this admin web page, I can execute a vpn binary ...
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Approach for comprehensive data/activity logging
I would like to be able to build up a log of user activities, capturing data such as who they were, where they logged in from, what activity did they take, and what data did they change (both before ...
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Handling Back-dated Transactions and "Online" Transactions on ERP/Banking Systems
I was currently developing a PoC of a "core banking system" in my current company, a pawn shop that generally offers lending services to retail customer and deposit services. We've built a ...
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Clarification on using timestamp without time zone and LocalDateTime in UTC-centric systems
I'm seeking clarification regarding the usage of timestamp without time zone in a database and its corresponding Java type, LocalDateTime. The current setup I'm working on involves servers and (...
user175557
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Better way to track and analyze downloads (or any other events)
I need to decide about my database architecture. The app provides files for download. I can add a counter to every file and track total events. But the client may want some analysis and ask for the ...
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What is a route I could take when considering setting up a data warehouse for a small business? [closed]
I am working for a medium-sized development and construction company and we are looking to upgrade our data and BI. Currently, all project data is managed via Excel (data, project management, and ...
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Monolithic Database to Microservices, but with Radical Data Model Changes
We are finishing up a long (over 1 year) project to retire our monolith. We have been moving pieces of functionality into microservices guided by domain driven design.
So far we have been leaving the ...
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Should I store large amounts of data in the properties of a node in a graph database?
I'm building a reddit clone on top of software that must incorporate a legacy neo4j graph database to track user actions. I also want to use it to store the comment/post data. Assuming this new app is ...
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Designing a graph database structure for an application with a large amount of connections
I'm looking for advice on how to design the data model for a project I'm working on. I'm not really sure where to ask such a question. I've been using StackOverflow for years, but this problem is a ...
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Designing a database schema for a website related to my town's history
I am working on digitizing old photographs, articles, ephemera, etc. related to my town's history, and I've been tasked to put these scans I've made onto a website for the public to see. There are ...
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Is it an anti-pattern to create ORM entities based on existing database schema?
I maintain a large legacy app working with SQL database. The app uses raw SQL queries to query the database. Together with app rewrite I plan to introduce ORM to work with the database.
The simplest ...
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How to effectively scale one microservice to multiple instances
Let’s say I have a booking microservice (single instance) with its own DB.
If I want to horizontally scale the service with multiple instances(exact same copy of the business logic code) running on ...
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Dynamically transform EAV data into standard SQL table
I use MariaDB to store data using EAV model. I need EAV, because each attribute of each entity can have its own validity (validFrom, validTo).
For example, I have entity person and I track changes ...
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How to design fault-tolerant distributed "all-or-nothing" system?
I have a system where Client(C) sends request to Server(S0). S0 then sends the response back to Client that "request received" and closes the connection. C can regularly poll S0 to check on ...
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how to deal with schema/constraint changes in insert-only Relational DBs?
as per request, I'll reduce this whole set of questions to 1-2 core points (thanks for the feedback ;)).
I'm considering using insert-only tables for keeping the history of my data. while the ...
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Better solutions than joining table for Many to Many?
Lets say I have students and classes which are 2 entities. A student can take many classes and a class can have many students. This would be a many to many relationship.
To solve this with an RDBMS my ...
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Database design for different type of user comment
I'm designing a database where a user can add notes on diffrent entity of the application.
For example, the user can add a note on the project and/or on the project line. The note added can have ...
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Is it a good practice to allow null FKs?
I have Projects table. Projects can have costs, so I have a Costs table. A cost can be because of a product or beacuse of a service. So I have 4 main tables:
Projects (IDProject, Description...)
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