What are the basic interview questions in SQL?

What are the basic interview questions in SQL?

SQL Interview Questions

• What is the difference between SQL and MySQL?
• What are the different subsets of SQL?
• What do you mean by DBMS?
• What do you mean by table and field in SQL?
• What are joins in SQL?
• What is the difference between CHAR and VARCHAR2 datatype in SQL?
• What is the Primary key?
• What are Constraints?

How do I prepare for SQL Developer interview?

If you want to perform well at the SQL job interview, these are the concepts you need to know:

1. Data Definition Language (DDL) keywords.
2. Data Manipulation Language (DML) keywords.
3. Data Control Language (DCL) keywords.
4. Transaction Control Language (TCL) keywords.
5. SQL constraints.
6. JOINs.
7. indexes.
8. transactions.

What are the interview questions for SQL Server?

SQL Server Interview Questions

1. How to create a database in SQL Server? A database is an organized file of data.
2. What is SQL?
3. What is PL/SQL?
4. What is the difference between SQL and PL/SQL?
5. What is RDBMS?
6. What is a database table?
7. How do you create a table in SQL?
8. How to delete a table in SQL Server?

Is SQL important for interviews?

SQL programming skills are highly desirable and required in the market, as there is a massive use of Database Management Systems (DBMS) in almost every software application. In order to get a job, candidates need to crack the interview in which they are asked various SQL interview questions.

What is a constraint in SQL?

SQL constraints are a set of rules implemented on tables in relational databases to dictate what data can be inserted, updated or deleted in its tables. This is done to ensure the accuracy and the reliability of information stored in the table.

What is PFK in SQL?

Table Names. Primary Foreign Key (PFK) – key which acts as primary key in more than one table which occurs in tables with an identifying relationship.

What is SQL Server query?

A database server is a computer program that provides database services to other programs or computers, as defined by the client-server model. Therefore, a SQL Server is a database server that implements the Structured Query Language (SQL). There are many different versions of Microsoft SQL Server, catering for different workloads and demands.

What are some examples of SQL Server?

Examples of proprietary database applications include Oracle, DB2, Informix, and Microsoft SQL Server. Examples of free software database applications include PostgreSQL ; and under the GNU General Public Licence include Ingres and MySQL.

What does MS SQL Server do?

Microsoft SQL Server is a relational database management system developed by Microsoft. As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications which may run either on the same computer or on another computer across a network (including the Internet).