Database Management

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Database Management by Mind Map: Database  Management

1. Objectives Overview

1.1. Define the term, database, and explain how a database interacts with data and informatio

1.2. Define the term, data integrity, and describe the qualities of valuable information

1.3. Discuss the terms character, field, record, and file

1.4. Describe file maintenance techniques and validation techniques

1.5. Differentiate between a file processing approach and the database approach

1.6. Discuss the functions common to most database management systems

1.7. Describe characteristics of relational, object‐ oriented, and multidimensional database

1.8. Explain how to access Web database

1.9. Identify database design guidelines and discuss the responsibilities of database analysts and administrator

2. Database

2.1. Collection of data organized in a manner that allows access, retrieval, and use of that dat

3. Data

3.1. Text

3.2. Numbers

3.3. Images

3.4. Audio

3.5. Video

4. Information

4.1. Processed data

4.2. Documents

4.3. Audio

4.4. Images Video

5. Valuable information should have the following characteristics

5.1. Accurat

5.2. Verifiable

5.3. Timely

5.4. Organized

5.5. Accessible

5.6. Useful

5.7. Cost‐effective

6. The Hierarchy of Data

6.1. Text

6.2. Numeric

6.3. AutoNumber

6.4. Currency

6.5. Date

6.6. Memo

6.7. Yes/No

6.8. Hyperlink

6.9. Object

6.10. Attachment

7. Maintaining Data

7.1. Adding records

7.2. Modifying records

7.3. Deleting records

8. File Processing Versus Databases

8.1. File processing system

8.1.1. Each department has its own set of file

8.1.2. Used for many year

8.1.3. Have data redundancy

8.1.4. Isolate data

8.2. Database approach

8.2.1. Programs and users share data

8.2.2. Reduce data redundancy

8.2.3. Improve data integrity

8.2.4. Share data

8.2.5. Allows easier access

8.2.6. Reduces development time

8.2.7. Can be more vulnerable

9. Database Management Systems

9.1. A data dictionary contains data about each file in the database and each field in those file

9.2. A DBMS provides several tools that allow users and programs to retrieve and maintain data in the databas

9.3. A query language consists of simple, English‐like statements that allow users to specify the data to display, print, or store

9.4. Query by example (QBE) provides a GUI to assist users with retrieving data

9.5. A form is a window on the screen that provides areas for entering or modifying data in a database

9.6. A report generator allows users to design a report on the screen, retrieve data into the report design, and then display or print the report

9.7. A DBMS provides means to ensure that only authorized users access data at permitted time

9.8. A DMBS provides a variety of techniques to restore the database to a usable form in case it is damaged or destroyed

10. Relational, Object‐Oriented, and Multidimensional Databases

10.1. A data model consists of rules and standards that define how the database organizes data

10.2. A relational database stores data in tables that consist of rows and columns

10.2.1. Each row has a primary key

10.2.2. Each column has a unique name

10.3. A relationship is a link within the data

10.4. Structured Query Language (SQL) is a query language that allows users to manage, update, and retrieve data

10.5. An object‐oriented database (OODB) stores data in objects

10.6. Examples of applications appropriate for an object‐oriented database include

10.6.1. Multimedia database

10.6.2. Groupware databas

10.6.3. Computer‐aided design databas

10.6.4. Hypertext database

10.7. A multidimensional database can store data in more than two dimensions of data

10.7.1. Sometimes known as a hypercube

10.7.2. Can consolidate data much faster than a relational database

10.8. A data warehouse is a huge database that stores and manages the data required to analyze historical and current transactions

11. Databases on the Web allow you to

11.1. Shop for products or services

11.2. Buy or sell stock

11.3. Search for a job

11.4. Make airline reservation

11.5. Register for college classes

11.6. Check semester grades

12. Check semester grades

12.1. It is important to have a carefully designed database

12.2. Employees should learn how to use the data in the database effectively

12.2.1. Interact with database

12.2.2. Identify new data for the database

12.2.3. Maintain the database