The computer language SQL, or Structured Query Language, is used to store, manipulate, and retrieve data from relational databases.
The preferred language for Relational Database Systems is SQL. SQL is the common database language used by all Relational Database Management Systems (RDMS), including MySQL, MS Access, Oracle, Sybase, Informix, Postgres, and SQL Server.
What common questions can be asked in SQL?
SQL is asked often in coding interviews. The most commonly asked about SQL is its syntax. Questions can be asked about what a certain keyword in SQL is and how it functions. Writing some SQL query to perform some operation in the database can also be asked.
How do you prepare a SQL question?
To prepare for a SQL question, one must be proficient with the basics of SQL. One must understand what SQL is and be thoroughly familiar with the syntax of the language, Then practice writing SQL queries to perform some operations in the database.
What are the important topics in SQL?
Some important topics in SQL are what are keys in SQL, what are views in SQL, SQL joins, normalization of the database, transactions in SQL, subqueries in SQL, cloning tables in SQL, and temporary tables in SQL. SQL syntax is also very important.