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1 day ago · Prepare for SQL developer interviews with 70+ questions and answers on SQL basics, data types, constraints, views, joins, subqueries, and more. Learn SQL for MySQL, Oracle, PostgreSQL, and other databases.
- What is Database? A database is an organized collection of data, stored and retrieved digitally from a remote or local computer system. Databases can be vast and complex, and such databases are developed using fixed design and modeling approaches.
- What is DBMS? DBMS stands for Database Management System. DBMS is a system software responsible for the creation, retrieval, updation and management of the database.
- What is RDBMS? How is it different from DBMS? RDBMS stands for Relational Database Management System. The key difference here, compared to DBMS, is that RDBMS stores data in the form of a collection of tables and relations can be defined between the common fields of these tables.
- What is SQL? SQL stands for Structured Query Language. It is the standard language for relational database management systems. It is especially useful in handling organized data comprised of entities (variables) and relations between different entities of the data.
Prepare for your SQL interview with this comprehensive guide that covers general and technical questions for job hunters and hiring managers. Learn about SQL flavors, commands, statements, functions, queries, and database design.
May 29, 2024 · Prepare for your SQL interview with over 100 questions and exercises, organized by topic and difficulty level. Find tips, cheat sheets, and courses to review your SQL knowledge and skills.
- Agnieszka Kozubek-Krycuń
- What is SQL? SQL stands for the Structured Query Language. It is the standard language used to maintain the relational database and perform many different data manipulation operations on the data.
- When SQL appeared? SQL first appeared in 1974. It is one of the most used languages for maintaining the relational database. In 1986, SQL became the standard of the American National Standards Institute (ANSI) and ISO (International Organization for Standardization) in 1987.
- What are the usages of SQL? SQL is responsible for maintaining the relational data and the data structures present in the database. Some of the common usages are given below
- Does SQL support programming language features? SQL refers to the Standard Query Language. Therefore, it is true that SQL is a language but does not actually support the programming language.
Jun 26, 2024 · Learn SQL concepts, Oracle, MS SQL Server, and MySQL database with this comprehensive guide. Find out the most frequently asked SQL interview questions and answers for beginners and experienced professionals.
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Jun 24, 2024 · SQL Query Interview Questions. Last Updated : 24 Jun, 2024. SQL or Structured Query Language is a standard language for relational databases. SQL queries are powerful tools used to, manipulate, and manage data stored in these databases like MySQL, Oracle, PostgreSQL, etc.