Database system
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This document provides definitions and summaries of different types of databases: - It defines databases, data, and database management systems. It also defines flat file databases, relational databases, document-oriented databases, embedded databases, hypertext databases, operational databases, and distributed databases. - Relational databases organize data into formally described tables that can be accessed in many ways without reorganizing tables. Document databases are designed for storing and managing document-oriented information. Embedded databases are integrated with application software. Operational databases contain reference and event data for transaction systems. Distributed databases consist of data files located across network sites.
Database system
- 2. Hanih Saneen saneenh@gmail.com www.facebook.com/hanih.saneen twitter.com/username in.linkedin.com/in/profilename +919633592258 Database and Database System
- 3. Disclaimer: This presentation is prepared by trainees of baabtra as a part of mentoring program. This is not official document of baabtra –Mentoring Partner Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
- 4. CONTENTS 1. Basic definitions 2. Types of Databases 3. Flat file Databases 4. Relational Databases 5. Document-Oriented Databases 6. Embedded Database 7. Hypertext Database 8. Operational Database 9. Distributed Database
- 5. Basic Definitions • Database : A collection of related data. • Data : Known facts that can be recorded and have an implicit meaning. • Database Management System(DBMS) : A software package/system to facilitate the creation and maintenance of computerized database. (cont.)
- 6. Database Management System , – defines(data types, structures, constraints) – construct(storing data on some storage medium controlled by DBMS) – Manipulate(querying, update, report generation) database for various application. • Database system : The DBMS software together with the data itself. Sometimes, applications are also included.
- 7. Types of Databases • Flat file databases • Relational databases • Document-oriented database • Embedded database • Hypertext database • Operational database • Distributed database
- 8. Flat File Database • A relatively simple database in which each database is contained inside a single table.
- 9. Relational Database • A relational database is a collection of data items organized as a formally described tables from which data can be accessed or reassembled in many ways without having to reorganize the database tables. The relational database was invented by E.F. Codd at IBM in 1970
- 11. Relational Database cntd. Advantages Disadvantages Ease of use Performance Flexibility Developer Expertise Data independence Hardware performance
- 12. Document-Oriented Database • Designed for storing, retrieving and managing document- oriented information. • NoSQL database.
- 13. Document-Oriented database cntd. Advantages Disadvantages Documents are independent units Does not support transactional operations. Easier to write Space is too large Unstructured data can be easily stored No mature maintenance tools for development and IT operations are noteworthy
- 14. Embedded Database • Integrated with an application software. • Database system is “hidden”
- 15. Hypertext database • Particularly useful for organize desperate data. • Eg : Wikipedia
- 16. Operational Database • Operational Database is the database-of-record, consisting of system-specific reference data and event data belonging to a transaction-update system. It may also contain system control data such as indicators, flags, and counters. • The operational database is the source of data for the data warehouse.
- 18. Distributed database • A database that consist of two or more data files located at different sites on a computer network. • Different users can acces files without interfering each other.
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