EduRev

Open App

CAT Exam > CAT Videos > Crash Course for CAT > Introduction to Tables -1

Introduction to Tables -1 Video Lecture | Crash Course for CAT

	Crash Course for CAT 796 videos\|1 docs\|32 tests

Crash Course for CAT

796 videos|1 docs|32 tests

Join Course for Free

Top Courses for CAT

View all

FAQs on Introduction to Tables -1 Video Lecture - Crash Course for CAT

1. What is a table in the context of databases?

Ans. A table in the context of databases is a structured collection of data organized in rows and columns. It is used to store related information, and each row represents a unique record, while each column represents a specific attribute or field of that record.

2. How are tables created in databases?

Ans. Tables are created in databases using a structured query language (SQL). The CREATE TABLE statement is used to define the table's structure, including the column names, data types, and any constraints or rules that need to be applied to the data.

3. What is the purpose of primary keys in database tables?

Ans. Primary keys in database tables serve as unique identifiers for each record in the table. They ensure that each row has a unique identity by preventing duplicate values. Primary keys are important for data integrity, efficient searching, and establishing relationships between tables.

4. Can tables in a database have relationships with each other?

Ans. Yes, tables in a database can have relationships with each other. Relationships are established by using primary keys and foreign keys. A foreign key in one table refers to the primary key in another table, creating a link between the two tables. This allows for data consistency and the ability to retrieve related information.

5. How can data be retrieved from a table in a database?

Ans. Data can be retrieved from a table in a database using SQL queries. The SELECT statement is commonly used to retrieve data from one or more tables based on specified criteria. The result of the query is a set of rows that match the conditions specified in the query.

Related Exams

CAT

About this Video

	4.98/5 Rating
	Nov 05, 2024 Last updated

Video Description: Introduction to Tables -1 for CAT 2024 is part of Crash Course for CAT preparation. The notes and questions for Introduction to Tables -1 have been prepared according to the CAT exam syllabus. Information about Introduction to Tables -1 covers all important topics for CAT 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Introduction to Tables -1.

Introduction of Introduction to Tables -1 in English is available as part of our Crash Course for CAT for CAT & Introduction to Tables -1 in Hindi for Crash Course for CAT course. Download more important topics related with notes, lectures and mock test series for CAT Exam by signing up for free.

Description

Video Lecture & Questions for Introduction to Tables -1 Video Lecture | Crash Course for CAT - CAT full syllabus preparation | Free video for CAT exam to prepare for Crash Course for CAT.

Information about Introduction to Tables -1

Here you can find the meaning of Introduction to Tables -1 defined & explained in the simplest way possible. Besides explaining types of Introduction to Tables -1 theory, EduRev gives you an ample number of questions to practice Introduction to Tables -1 tests, examples and also practice CAT tests.

	Crash Course for CAT 796 videos\|1 docs\|32 tests

Crash Course for CAT

796 videos|1 docs|32 tests

Join Course for Free

Explore Courses for CAT exam

Signup for Free!

Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.

Start learning for Free

10M+ students study on EduRev

mock tests for examination

ppt

study material

pdf

Objective type Questions