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What is explain in database?

Contents
  1. What is database explain its different types?
  2. What is query explain with example?
  3. What are the components of database explain?
  4. What are 3 types of databases?
The EXPLAIN keyword is used throughout various SQL databases and provides information about how your SQL database executes a query. In MySQL, EXPLAIN can be used in front of a query beginning with SELECT , INSERT , DELETE , REPLACE , and UPDATE . 12 дек. 2017 г.


What is database explain its different types?

Types of Databases Distributed database: It has two or more files located in different places. The database may be in the same physical location on multiple computers or scattered over different networks. NoSQL database: NoSQL is a nonrelational database that contains unstructured and semistructured data.

What is query explain with example?

Query is another word for question. In fact, outside of computing terminology, the words "query" and "question" can be used interchangeably. For example, if you need additional information from someone, you might say, "I have a query for you." In computing, queries are also used to retrieve information.

What are the components of database explain?

The five major components of a database are hardware, software, data, procedure, and database access language.

What are 3 types of databases?

What are the types of databases?Relational databases. Relational databases have been around since the 1970s. ... NoSQL databases. ... Cloud databases. ... Columnar databases. ... Wide column databases. ... Object-oriented databases. ... Key-value databases. ... Hierarchical databases.The Types of Databases (with Examples) - Matillion

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