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KwickClips Databases and SQL · 41 sec · free

What is a query?

Short answer. A question or instruction to the database.

How does a statement end?

With a semicolon.

SQL in one slide

Structured Query Language
Query: a question to a database
Runs on MySQL, Oracle, SQLite

Remember

SQL talks to databases
End each statement with ;

How do apps ask a database for data? They use S Q L. It means Structured Query Language. A query is a question to the database. My S Q L and Oracle run it. S Q L talks to databases. End every statement with a semicolon.

This clip is from the full lesson: Introduction to SQL and MySQL: DDL, DML and DQL — 7 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: CBSE Class 12 Computer Science (083), CBSE Class 11 Informatics Practices (065), CBSE Class 11 Information Technology (802), CBSE Class 11 Information Technology (802)

More KwickClips from this lesson

Table of DDL, DML and DQL with one command each.Is SELECT DDL or DQL?43 secMySQL prompt showing the -> continuation sign before a semicolon.Why does MySQL show ->?40 secTable of five SQL data types with an example value each.Which type stores 85.5?42 sec
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