About SQL: SQL is Structured Query Language, it is used to communicate with Data base. Every programmer has to deal with data and the data has to be stored in data base. Those candidates with Knowledge of Data base along with SQL are prior for any employee. So, SQL is important for those who are preparing for interviews. Here we provide some data base and SQL Interview Questions & Answers Pdf which will be helpful to both beginners and also programmers.
SQL Interview Questions:
- What is DBMS?
- What is RDMS?
- What is SQL?
- What is primary key?
- What is unique key?
- What is foreign key?
- What are the types of joins?
- What is normalization?
- What are 1NF, 2NF, 3NF?
- What is view?
- What is query?
- What is trigger?
- What is the difference between SQL and PLSQL?
- DDL, DCL and DML commands
- Which operator is used for pattern matching?
These are the most frequently asked SQL interview questions. To refer answers to those questions and TOP 50 SQL questions with answers visit the link complete SQL interview questions.
Oracle is also important to have a complete idea about SQL and DBMS. Refer the frequently asked Oracle interview questions.
To get succeed in the interview, go through the above questions and links and practice queries. Along with oral interview you are asked write queries, create and alter table, operations using different commands etc. As a fresher it is very important to concentrate on basics than going very deep into the subject. Answering all the questions doesn’t matter but whatever the questions answered, you must have answered them with confidence. Preparing all those mentioned and these small things in mind you can definitely get success in the interview. All the best…!
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