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Database Management System(DBMS)

Database Management System(DBMS). It refers to the software used to manage the database. Database Management:. Is a computer software made for organizing, analyzing and modifying the information stored in a database.

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Database Management System(DBMS)

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  1. Database Management System(DBMS) It refers to the software used to manage the database.

  2. 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.

  3. USES OF A DBMS It manages the following: • The structure of individual files • Relationships between data items and data files • How data is integrated • Properties of a database

  4. Types Of DBMSs • Hierarchical database management systems • Network database management systems • Relational database systems

  5. Examples of DBMS: • Oracle • Microsoft Access • Microsoft SQL server • Firebird • FileMaker

  6. Hierarchical database management systems • Its main use is in folder/file organisation like the folder structure used on Windows operating system. • It uses tree-like structure similar to a family tree system. • It allows fast access to data but large amounts of data are bypassed as levels increase • They are no longer used because they use a one way relationship.

  7. Network Database Management Systems • It is mainly used by distributed database systems • Parts of a database are stored on smaller database linked through WANs or LANS • Many of the parts are duplicated so data is less likely to be lost • It appears to the user to be a single system • Duplication enables faster processing • It is an old technology that is still widely used

  8. Relational Database Systems • It consists of a number of tables that are related in some way • Each table has a key field • Data from one table can be combined with data from other tables for creating reports e.g from a grdaes and personal details table • The standard programming language for relational tables is the structured query language(SQL).

  9. MICROSOFT ACCESS SCREEN SHOTS:

  10. Advantages of Relational Database Mangement Systems • Data is not repeated and therefore does not waste valuable resources • Separate tables connected by a key field are used • Data retrieval is also quicker • Data is not duplicated across several files which is more secure. • There is room for expansion. The database can be extended with more data and tables

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