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A query is a request for data from a database. It adds meaning to the code, so the system can understand and process the query accordingly. Learn more about what is a query by watching this video.
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🕒 Timestamps
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00:00 - Introduction
00:37 - What Is a Query?
01:38 - How Do Queries Work?
03:16 - Query Languages
04:05 - Query Examples
05:40 - Outro
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👉 What Is a Query?

Query means a request for data from a database. Using a query allows you to review data from multiple tables simultaneously.

For database management, you’ll need to use a query language like SQL, AQL, Datalog, or DMX.

👉 How Do Queries Work?

Queries add meaning to the code so the system can understand and execute actions. Users and databases can exchange information as long as they use the same language.

👉 Query Languages

There are two types of query languages: Structured Query Language (SQL) and Not Only Structured Query Language (NoSQL). The main difference between them is the data structure.

👉 Query Examples

There are a lot of query commands for managing data in a database table. Learn some of the commands by watching this video.

If you have any other questions about what is a query or related topics, leave us a comment.
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