Class 12 Computer Science — Chapter 1: Querying and SQL Functions

What you'll learn

• ▸Types of SQL Functions
• ▸Numeric Functions
• ▸String Functions
• ▸Date and Time Functions
• ▸CARSHOWROOM Database Schema
• ▸Applying Functions in DML
• ▸Grouping Records with GROUP BY
• ▸Querying Multiple Tables (Joins)

Chapter Summary

--- PAGE 1 --- Chapter 1 Querying and SQL Functions “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” 12149CH01 — Lev Manovich In this chapter » Introduction » Functions in SQL » Group By in SQL 1.1 Introduction » Operations on Relations In Class XI, we have understood database » Using Two Relations concepts and learned how to create databases in a Query using MySQL. We have also learnt how to populate, man…

Practice Questions from this Chapter

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1. Explain database security simply. Get Solution →
2. Give database examples for games. Get Solution →
3. Describe SQL functions with code. Get Solution →
4. According to the chapter, what is another name for Single Row functions? Get Solution →
5. Which of the following is listed as a Numeric (Math) function in Figure 1.2? Get Solution →
6. What is the primary purpose of the POWER(X,Y) function in SQL? Get Solution →
7. What does the MOD(A, B) function return? Get Solution →
8. Based on Figure 1.2, which of the following is categorized as a String Function? Get Solution →

Did you know?

• 💡 The internet creates 2.5 quintillion bytes of new data every single day.
• 💡 Ancient Mesopotamians used clay tablets to store important records and stories.
• 💡 Your brain can store as much information as 2.5 million gigabytes of computer data.
• 💡 The SQL programming language was first developed in the early 1970s.
• 💡 Computer functions are like tiny mini-programs that do one specific job.

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