The BLOB Data Type Explained!
In this sql tutorial I'll explain the BLOB data type - you will know what it is, how it works, and when should it be used.
The BLOB data type is often one of the most frequently asked sql interview questions and answers, so make sure to watch this sql tutorial for beginners to know the answer to such sql questions should you face any.
A BLOB data type stands for a Binary Large Object and it represents a data type storing binary data. Almost any sql tutorial will tell you that a BLOB data type in sql queries is used to store images, videos, audio files, documents, and / or archives. Make sure to learn everything you need to know about such a sql data type by watching this video!
This video will also provide you with a couple of sql query examples based on mysql server.
Below you will also find some of the most frequently asked sql queries interview questions and answers:
Q: What are some of the most popular data types in sql?
A: Some of the most popular data types in sql include VARCHAR, TEXT, integer-based data types, the BLOB data type, and some others.
Q: Could you give me some tips for sql query optimization?
A: To optimize INSERT, UPDATE, and DELETE SQL queries, remove indexes or partitions. To optimize read (SELECT) sql queries, add indexes or partitions to minimize the amount of rows your database will be searching through.
Q: What is a sql index?
A: To put it simply, a sql index is a database structure used to quickly find rows. We've already made a couple of videos on sql indexes explained, so make sure to check them out.
Q: Is sql injection very dangerous? How to avoid it?
A: Yes, sql injection is a very dangerous security flaw. To avoid sql injection, avoid passing user input straight to a database.
Q: Explain sql in 100 seconds.
A: SQL is a programming language allowing for work with various RDBMS including the mysql server, mariadb server, percona server, and others.
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