Experiencing MIS
Experiencing MIS
8th Edition
ISBN: 9780134792736
Author: KROENKE
Publisher: PEARSON
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Chapter 5, Problem 2ARQ

Explanation of Solution

Database:

Database is a collection of information that is used to store and retrieve the data. Data is organized in tables.

Hierarchy of Data:

The hierarchy of data is specified in tree-like structure. The records are connected through links. The database elements are,

  • Table or File
  • Records or Rows
  • Fields or Columns
  • Bytes or Characters

Metadata:

Metadata gives information about other data or simply, it is a data about the data.

  • It provides the description about the characteristics or properties of end user data and environment of the data.
  • The environment includes the source of the data, where it is stored, usage, and so on.
  • It gives all the information about a data.

Relationship among the rows:

  • Using the examples of “student” and the “office_visit” tables the relationship can be described as one to one relationship.
  • Because the student number in the “student” table and the student number in the “office_visit” table have the unique student number.
  • If any modification is made concerning the student number in the “student” table, then it is automatically updated in the “office_visit” table...

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