10 MySQL Database Interview Questions for Beginners and Intermediates
Abstract: however Unique Key does allows one NULL value. 6. How to store picture file in the database. What Object type is usedA Relational Database Management
In our last article, we’ve covered 15 Basic MySQL Questions, again we are here with another set interview questions for intermediate users. As we said earlier these questions can be asked in Job Interviews. But some of our critics on the last article said, that I don’t give response to my critics and the questions are very basic and will never be asked in any Database Administrator Interview.
10 Mysql Job Interview QuestionsTo them we must admit all the articles and question can not be composed keeping all the flock in mind. We are coming from basic to expert level step by step. Please Cooperate with us.
1. Define SQL? Answer : SQL stands for Structured Query Language. SQL is a programming Language designed specially for managing data in Relational Database Management System (RDBMS). 2. What is RDBMS? Explain its features?Answer : A Relational Database Management System (RDBMS) is the most widely used database Management System based on the Relational Database model.
Features of RDBMS- Stores data in tables.
- Tables have rows and column.
- Creation and Retrieval of Table is allowed through SQL.
Answer : Indexes are the quick references for fast data retrieval of data from a database. There are two different kinds of indexes.
Clustered Index- Only one per table.
- Faster to read than non clustered as data is physically stored in index order.
- Can be used many times per table.
- Quicker for insert and update operations than a clustered index.
9. How many TRIGGERS are possible in MySql?
Answer : There are only six triggers are allowed to use in MySQL database and they are.
- Before Insert
- After Insert
- Before Update
- After Update
- Before Delete
- After Delete
That’s all for now on MySQL questions, I will be coming up with another set of questions soon. Don’t forget to provide your valuable feedback in comment section.