Study Record Data

Introduction

              The concept of records and fields was central in some early file sorting and tabulating utilities, such as IBM's Report Program Generator (RPG). The concept of record can be traced to various types of tables and ledgers used in accounting since remote times. In modern notion of records the computer science with fields of well-defined type and size. Typically each records of a data file would be recorded in one punched card, with specific columns assigned to specific fields.

 

 

Characteristics and applications of studying record data:

 

Characteristics to study record data:

  • Several uniquely structure of a database is called data fields.

  • The data record which has been grouped is called as Grouped data.

  • The record data is a set of information or collection of facts.

  • The record data are collect by means of undertaking surveys.

  • This method is the most commonly used method for the collection of record data.

  • The record data can be used in some applications that can be shown as follow.

Applications to study record data:

  • Internet search engine.

  • Manufactures to product the information’s.

  • Manage the patient information in the hospitals.

  • Keep the tracks in stores for customer shopping.

  • The followings structure shows the way to work a to use Delphi's record data.

E.g.

Tmember = Record...

  • The following declaration can be creates a record type called Tmember.

  • To record the name, address, mobile no of the particular persons for data record.

type

Tmember = Record

Name:  String;

Address: String;

Mobile no: Cardinal;

End;

 

Examples to study record data:

 

The following examples helps us to study record data:

1. The following table shows the study of record data of marks by 10 students in two semester.

Names

Semester 1

Semester 2

Alex

kevin

Rock

Ashoak

kumar

Anjali

Renu

Hamilton

Sam

Peter

77

40

45

81

69

81

94

51

87

50

 

96

70

70

86

70

91

96

70

89

58

 

2. The following table shows the study of record data of the weights of 50 staffs of a company.

Weight (in kg)

40 – 45

45 – 50

50 – 55

55 – 60

60 – 65

65 – 70

70 – 75

No of staffs

    10

   2

   4

   6

   3

   21

   4