Database Management Systems and their uses

Contents: Database Database Management Database Management benefits Examples of DBMS Types of database management system models Data Security, and more…

Database: Is a structured collection of records or data that is stored in a computer system. Usually contains software so that a person or program can use it to answer queries or extract desired information. The term "database" refers to the collection of related records, and the software should be referred to as the database management system (DBMS).

Database Management: Is a computer software made for organizing, analyzing and modifying the information stored in a database. It is a set of programs that helps in controlling the organization's storage and retrieval of data in a database. It helps manage the design process and builds a bridge between the design chain and extended enterprise for optimal design and resource management.

The Benefits : Increase productivity through real-time component data and design re-use. Consolidate parts, inventory and manufacturing requirements. Decision support through integration with enterprise business systems applications. Information systems can be changed easily according to the company's requirements.

Examples of DBMS: Oracle Microsoft Access Microsoft SQL server Firebird FileMaker

MICROSOFT ACCESS SCREEN SHOTS:

Examples of database applications: computerized library systems automated teller machines flight reservation systems computerized parts inventory systems

Types of database management system models: DISTRIBUTED DATABASE MODEL NETWORK DATABASE MODEL OBJECT ORIENTED DATABASE MODEL HIERARICIAL DATABASE MODEL RELATIONAL DATABASE MODEL

1-DISTRIBUTED DATABASE: Many users can access the database at the same time without interfering each other. Economical and can be modified, added or removed from the system easily.

2-NETWORK DATABASE: The network model tends to store records with links to other records. Most network databases tend to also include some form of hierarchical model. Used when large organizations spread over wide geographical area.

3-OBJECT ORIENTED DATABASE: Information is represented in the form of objects as used in Object-Oriented programming. When database capabilities are combined with object programming language capabilities, the result is an object database management system (ODBMS). Generally recommended when there is a business need for high performance processing on complex data.

HIERARCHICAL DATABASE: Data are organized into a tree-like structure. The structure allows repeating information using parent/child relationships :each parent can have many children but each child only has one parent. An example : -organization had records of employees in a table called “Employees” and another called “Children”

RELATIONAL DATABASE: Users (or programs) request data from a relational database by sending it a query that is written in a special language, usually a dialect of “SQL”.

Data Security: Is to ensure that data is kept safe from corruption and that access to it is suitably controlled. So help in ensure privacy. It also helps in protecting personal data.