A good tool to design DB Schema and even generate corresponding SQL code is dbdiagram.io.
When working on a project one usually take help of containerization tools like docker so we don’t setup RDBMS locally but if we want a GUI of them we can use table plus which is the modern, native, and friendly GUI tool for relational databases: MySQL, PostgreSQL, SQLite & more.
A data could be anything like about customers, products, employees, orders, …etc. and can be in any format like text format, numeric, dates, document files, images, audio, or video.
There are different DBMS, and they are categorized under:
<aside> 💡 Database and DBMS are not the same thing, Database is an organized collection of data while DBMS is a software used to manage the database.
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A database is an organized collection of data.
There are many ways to organize a database and many different types of databases designed for different purposes. Within databases, tables are organized in schemas.
The database schema is its structure described in a formal language supported by the database management system (DBMS).
Schema refers to the organization of data as a blueprint of how the database is constructed (divided into database tables in the case of relational databases).
In a relational database, the schema defines the tables, fields, relationships, views, indexes, packages, procedures, functions, queues, triggers, types, sequences, materialized views, synonyms, database links, directories, XML schemas, and other elements.