Class 12 Computer Science — Chapter 9: Structured Query Language (SQL)
Free AI tutor + NCERT notes for Chapter 9: Structured Query Language (SQL). 6 topics covered. Ask any question by voice or text in Hindi or English.
What you'll learn
- ▸Introduction to Structured Query Language (SQL)
- ▸MySQL Data Types
- ▸SQL Constraints
- ▸Data Definition Language (DDL)
- ▸Creating and Managing Databases
- ▸CREATE TABLE Statement
Chapter Summary
--- PAGE 1 --- Chapter 9 Structured Query Language (SQL) "Any unique image that you desire probably already exists on the internet or in some database... The problem today is no longer how to create the right image, but how to find an already existing one." — Lev Manovich In this Chapter » Introduction » Structured Query Language (SQL) » Data Types and Constraints in MySQL » SQL for Data Definition » SQL for Data Manipulation » SQL for Data Query » Data Updation and Deletion » Functions in SQL » GROUP BY Clause in SQL » Operations on Relations » Using Two Relations in a Query 9.1 INTRODUCTION We have learnt about Relational Database Management Systems (RDBMS) and its purpose in the previous chapter. There are many RDBMS such as MySQL, Microsoft SQL Server, PostgreSQL, Oracle, etc. that allow us to create a database consisting of relations. These RDBMS also allow us to store, retrieve and manipulate data on that database through queries. In this chapter, we will learn how t…
Practice Questions from this Chapter
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- Explain SQL simply. Get Solution →
- Show a real-world database. Get Solution →
- Create a simple table. Get Solution →
- What is the most popular query language used by major relational database management systems? Get Solution →
- According to the text, is SQL case-sensitive? Get Solution →
- How should every SQL statement end? Get Solution →
- Which SQL statement is used to create a new database? Get Solution →
- What command is used to select a database to work with after it has been created? Get Solution →
Did you know?
- 💡 The very first database was created in the 1960s to manage parts for the Apollo moon mission.
- 💡 SQL was first called "SEQUEL," which stands for Structured English Query Language.
- 💡 Every minute, people create enough new digital data to fill millions of books.
- 💡 The largest known database could store information about every single grain of sand on Earth.
- 💡 Many video games use a type of SQL to save your game progress and inventory items.
Frequently Asked Questions
How many topics are covered in this chapter?
This chapter covers 6 key topics: Introduction to Structured Query Language (SQL), MySQL Data Types, SQL Constraints, Data Definition Language (DDL), Creating and Managing Databases, and more. The BrainWeave AI tutor explains each one with examples.
Is Chapter 9: Structured Query Language (SQL) important for board exams?
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