What is SQL testing interview questions?
Here are some common SQL tester interview questions:
- What is SQL?
- What is a DBMS?
- What are tables in SQL?
- What are the different clauses used in SQL?
- What are the factors to check during database testing?
- What is data-driven testing?
- What are JOINs in SQL, and what types of JOINs are there?
- What is DML?
How do you talk about SQL in interview?
Here’s a good example answer: “I feel there can be a real sense of achievement working in SQL, from solving broken queries to designing new ones! There is so much to learn working with SQL, it’s an exciting and growing coding language and I want to expand my query design abilities through this role.”
What are the 3 major SQL operations?
Embedded SQL statements place DDL, DML, and transaction control statements within a procedural language program.
What is the most important thing in SQL?
SELECT is by far the most important statement, as well as the most frequently used statement in SQL. It’s used to retrieve data from a datable. You can show everything from a table, a column or just some records based on the conditions.
What is SQL name any five queries with example?
Five types of SQL queries are 1) Data Definition Language (DDL) 2) Data Manipulation Language (DML) 3) Data Control Language(DCL) 4) Transaction Control Language(TCL) and, 5) Data Query Language (DQL) Data Definition Language(DDL) helps you to define the database structure or schema.
What is a SQL query example?
An SQL SELECT statement retrieves records from a database table according to clauses (for example, FROM and WHERE ) that specify criteria. The syntax is: SELECT column1, column2 FROM table1, table2 WHERE column2=’value’;
What are triggers in SQL?
A trigger is a special type of stored procedure that automatically runs when an event occurs in the database server. DML triggers run when a user tries to modify data through a data manipulation language (DML) event. DML events are INSERT, UPDATE, or DELETE statements on a table or view.
What is SQL basic commands?
SQL commands are the instructions used to communicate with a database to perform tasks, functions, and queries with data. SQL commands can be used to search the database and to do other functions like creating tables, adding data to tables, modifying data, and dropping tables.