NCERT Class 11 Informative Practices Database Concepts

Informatics Practices
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Read and download NCERT Class 11 Informative Practices Database Concepts 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 Chapter 7 Database Concepts

Class 11 Informatics Practices students should refer to the following NCERT Book Chapter 7 Database Concepts in Class 11. This NCERT Book for Class 11 Informatics Practices will be very useful for exams and help you to score good marks

Chapter 7 Database Concepts NCERT Book Class 11

7.1 Introduction
After learning about importance of data in the previous chapter, we need to explore the methods to store and manage data electronically. Let us take an example of a school that maintains data about its students, along with their attendance record and guardian details.
The class teacher marks daily attendance of the students in the attendance register. The teacher records ‘P’ for present or ‘A’ for absent against each student’s roll number on each working day.
If class strength is 50 and total working days in a month are 26, the teacher needs to record 50 × 26 records manually in the register every month. As the volume of data increases, manual data entry becomes tedious. Following are some of the limitations of manual record keeping in this example:
1) Entry of student details (Roll number and name)
in the new attendance register when the student is promoted to the next class.
2) Writing student details on each month’s attendance page where inconsistency may happen due to incorrectly written names, skipped student records, etc.
3) Loss of data in case attendance register is lost or damaged.
4) Erroneous calculation while consolidating attendance record manually.
The office staff also manually maintain Student details viz. Roll Number, Name and Date of Birth with respective guardian details viz. Guardian name, Contact Number and Address. This is required for correspondence with guardian regarding student attendance and result.
Finding information from a huge volume of papers or deleting/modifying an entry is a difficult task in pen and paper based approach. To overcome the hassles faced in manual record keeping, it is desirable to store attendance record and student details on separate data files on a computerized system, so that office staff and teachers can:
1) Simply copy the student details to the new attendance file from the old attendance file when students are promoted to next class.
2) Find any data about student or guardian.
3) Add more details to existing data whenever a new student joins the school.
4) Modify stored data like details of student or guardian whenever required.
5) Remove/delete data whenever a student leaves the school.



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Chapter 01 Computer System
NCERT Class 11 Informative Practices Computer System
Chapter 02 Emerging Trends
NCERT Class 11 Informative Practices Emerging Trends
Chapter 03 Brief Overview of Python
NCERT Class 11 Informative Practices Brief Overview of Python
Chapter 04 Working with Lists and Dictionaries
NCERT Class 11 Informative Practices Working With Lists and Dictionaries
Chapter 05 Understanding Data
NCERT Class 11 Informative Practices Understanding Data
Chapter 06 Introduction to NumPy
NCERT Class 11 Informative Practices Introduction To Numpy
Chapter 07 Database Concepts
NCERT Class 11 Informative Practices Database Concepts
Chapter 08 Introduction to Structured Query Language (SQL)
NCERT Class 11 Informative Practices Introduction To Structure Query Language
Other Chapters
CBSE Class 11 Informatics Practices Control Structures
CBSE Class 11 Informatics Practices Functions in MySQL
CBSE Class 11 Informatics Practices Hardware Concepts
CBSE Class 11 Informatics Practices IDE Programming
CBSE Class 11 Informatics Practices Information Security
CBSE Class 11 Informatics Practices Introduction to SQL
CBSE Class 11 Informatics Practices MySQL
CBSE Class 11 Informatics Practices Programming Fundamentals
CBSE Class 11 Informatics Practices Programming Guidelines
CBSE Class 11 Informatics Practices Sample Applications
CBSE Class 11 Informatics Practices Software Concepts
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Informatics Practices NCERT Book Class 11 Chapter 7 Database Concepts

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NCERT Book Class 11 Informatics Practices Chapter 7 Database Concepts

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Chapter 7 Database Concepts NCERT Book Class 11 Informatics Practices

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Class 11 Informatics Practices Chapter 7 Database Concepts NCERT Book

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Class 11 Chapter 7 Database Concepts NCERT Book Informatics Practices

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