CBSE Class 11 Informatics Practices Introduction to SQL

Read and download CBSE Class 11 Informatics Practices Introduction to SQL in NCERT book for Class 11 Informatics Practices. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Informatics Practices textbook for Class 11 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 11 Informatics Practices to understand the answers of the exercise questions given at the end of this chapter

NCERT Book for Class 11 Informatics Practices Introduction To Sql

Class 11 Informatics Practices students should refer to the following NCERT Book Introduction To Sql in Class 11. This NCERT Book for Class 11 Informatics Practices will be very useful for exams and help you to score good marks

Introduction To Sql NCERT Book Class 11

 

Introduction to MySQL

These days computerized databases can be seen being used almost everywhere. The police force uses various computerized databases to help them track criminals and solve crimes. A library stores details of all their books, in a computerized database. When we want to know if a book is in stock, we cannot only look it up, but can also check when it is due to be returned.

The database also records details of all the borrowers, what books they currently have borrowed and when they are due back.

What is Database Management System(DBMS)?

To create and maintain a database on a computer, we need a database program, called a Database management system, or DBMS. Database Management System is a software that enables users to create and maintain databases. Examples of popular DBMSs are MySQL, PostgreSQL, Microsoft Access, Oracle, Microsoft SQL Server, DB2 and Sybase.

A DBMS gives us tools to:

Store data in a structured way.

Query the database (that is, ask questions about the data)

Sort and manipulate the data in the database

Validate the data entered and check for inconsistencies

Produce flexible reports, both on screen and on paper, that make it easy to Comprehend the information stored in the database.

Tables in a Database

Relational Databases store data or information in tables. A table is similar to a spreadsheet where data is stored in rows and columns. A table refers to a two dimensional representation of data using rows and columns. 

 The horizontal subset of the Table is known as a Row/Tuple. Each row represents a record, which is a collection of data about a particular person, place or thing. The vertical subset of the Table is known as a Column/Attribute. The term field is also often used for column. Each column has a unique name and the content within it must be of the same type.

 Relational Database

In the database named Learner shown below, the data is organized into separate tables. Once the tables have been set up, a relationship can be created to link them together. Such a database that stores data in separate tables that are related through the use of a common column is called a Relational database.

RDBMS Terminology: Admission_No RollNo Name Class Sec Dues

Primary key

When you got admission in the school, you were given an Admission number. The Admission number assigned to you was not assigned to any other student of your school (it is unique). When patients go to a hospital, each patient is given a unique patient number. When you go to open an account in the bank, you are given a unique account number. Admission number, Patient number, Account number are all examples of Primary key. A primary key is a field in a table that is unique for each record. Every database table should have a column or a group of columns designated as the primary key. The value this key holds should be unique for each record in the table. Some more examples of Primary key are: Accession Number of a Book in the Book table, Employee ID of an employee in the Employee Table, Item Code of an item in the Stock table, Flight Number of a flight in the Flight Master Table, etc.

 

Please refer to the link below - CBSE Class 11 Informatics Practices Introduction to SQL

Informatics Practices NCERT Book Class 11 Introduction To Sql

The above NCERT Books for Class 11 Informatics Practices Introduction To Sql have been published by NCERT for latest academic session. The textbook by NCERT for Introduction To Sql Informatics Practices Class 11 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Introduction To Sql NCERT etextbooks as the exams for Class 11 Informatics Practices are always asked as per the syllabus defined in these ebooks. These Class 11 Introduction To Sql book for Informatics Practices also includes collection of question. We have also provided NCERT solutions for Class 11 Informatics Practices which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 11 students.

NCERT Book Class 11 Informatics Practices Introduction To Sql

The latest NCERT book for Introduction To Sql pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 11 Informatics Practices Introduction To Sql are designed to enhance the overall understanding of students. All Class 11 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 11 students. 

Introduction To Sql NCERT Book Class 11 Informatics Practices

As the students of Class 11 need the books for their regular studies, we have provided all NCERT book for Introduction To Sql in pdf here for free download. All pdf NCERT books available here for Class 11 will help them to read on their mobile or computers. They can take a print of the Class 11 Informatics Practices NCERT Book Introduction To Sql pdf easily and use them for studies. The NCERT textbooks for Class 11 Informatics Practices have been provided chapter-wise and can be downloaded for free of cost. 

Class 11 Informatics Practices Introduction To Sql NCERT Book

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Class 11 Introduction To Sql NCERT Book Informatics Practices

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