Class 12 Computer Science/ Informatics Practice Term - 2

Database concept and SQL queries

Created byRohit Ranjan

Last updated 5/2022

English

What you'll learn

Database Concepts as per the CBSE syllabus
Practice Paper
SQL Queries
Class 12

Course content

2 sections • 11 lectures • 1h 13m total length

Preview of the course1:05
Revisit the basic concept of a database as a collection of interrelated data and explain how a computer-based database management system supports creating databases for board exam readiness.
Introduction22:01
Learn core database concepts and the role of a database management system. Discover how centralized data reduces redundancy and preserves privacy, with the relational model, tables, domains, cardinality, and keys.

Fundamentals of SQL17:08
Explore fundamentals of SQL, including DDL, DML, DCL, and TCL, and practice creating tables, inserting data, and managing transactions with COMMIT, ROLLBACK, and SAVEPOINT.
Create and Insert in SQL7:14
Create a database, define a student table with a primary key, insert records with sql, and validate with select and proper date formats and data types.
Alter and Update4:55
Explore alter and update in practice: add a column to the student table, update addresses for records, and drop the column to see how changes affect all rows.
More on Insert4:21
Insert multiple student records into a table, verify with select queries, enforce proper birthdate formats (yyyy-mm-dd), and handle duplicate primary key errors by changing admission numbers.
More on Alter2:58
Demonstrates altering a table to modify the student name column, including increasing and decreasing its size, and applying not null constraints while preventing reduction below existing data.
Select in SQL5:34
Learn to use the select statement to fetch all or specific columns, apply where filters, and combine conditions with and/or for data like dates and marks.
String based Query3:26
Learn to write string-based queries using select and where with the like operator, employing percent and underscore wildcards to filter records by starting, ending, or containing patterns.
Order by VS Group by2:50
Sort student records by a chosen column with order by to display ascending or descending results, and group by to show unique values and the first record per group.
Having clause2:12
Explore how to use the having clause with group by to filter groups by aggregated values, such as sum of marks greater than 75, with practical examples.

Requirements

NO Programming skill

Description

This course is created for the students of class 12 to learn and score more marks in database concept and SQL. All the contents have been taken to represent the syllabus of class 12 Computer Science and Informatics Practices. Students are going to learn and also they are going to become an expert on the said topic. Through practical examples and also through the practical analysis of bugs, students will achieve very high level of thinking.

Database concept is the theoretical topic which provides you to learn various jargons and terminology used in the world of DBMS. You are going to learn all the advantages and disadvantages of various terms.

What is Data?

In simple words, data can be facts related to any object in consideration. For example, your name, age, height, weight, etc. are some data related to you. A picture, image, file, pdf, etc. can also be considered data.

What is Database?

A database is a systematic collection of data. They support electronic storage and manipulation of data. Databases make data management easy.

Here are some popular types of databases.

Distributed databases:

A distributed database is a type of database that has contributions from the common database and information captured by local computers. In this type of database system, the data is not in one place and is distributed at various organizations.

Relational databases:

This type of database defines database relationships in the form of tables. It is also called Relational DBMS, which is the most popular DBMS type in the market. Database example of the RDBMS system include MySQL, Oracle, and Microsoft SQL Server database.

Object-oriented databases:

This type of computers database supports the storage of all data types. The data is stored in the form of objects. The objects to be held in the database have attributes and methods that define what to do with the data. PostgreSQL is an example of an object-oriented relational DBMS.

You are going to understand the essentiality of RDBMS and also the use of SQL.

SQL Queries are very deep learning topic. This course focused on very specific topics required for the students of class 12.

There are different categories of SQL statements that you are going to learn in the course.

Who this course is for:

CBSE Class 12 Students (IP/CS)

Class 12 Computer Science/ Informatics Practice Term - 2

What you'll learn

Explore related topics

Course content

Database Concept2 lectures • 23min

SQL9 lectures • 51min

Requirements

Description

Who this course is for: