A database is a collection of data
- Centralised database
- Relational database
- NoSQL database
- Personal database
- Operationa database
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1960s First database was created in 1960s, when the use of computers became a more cost-effective option for private organizations. The first successful database was created by IBM to help American airlines manage its reservation data.
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1970s The first relational database prototypes were started in 1970s. In 1976 P.Chen proposed a new database model called Entity Relationship or ER. It focus more on Data Applications.
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1990s Structured Query Language became standard anguage to query the databases. ODBMS or Object Database Management Systems were invented in late 1990s. Microsoft created MS Access to store the data.
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Today Now databases are everywhere and are used to enhance our day-to-day life. Now there are many databases available in the market and the most popular one is Orcle database. Now-a-days there are many tools to workm on datanases.
For more information: History of databases
- Oracle
- Mysql
- Postgre SQL
It is a multi model relational database. Oracle is most popular database among all DB's due to some special features. The architeture of oracle database is simple and perfect. The cost of oracle database licence is high when compared with remaining DBs.
It is open source and second popular database. It is a relational database. Is is having two types of replications, one is master and master replication and another one is master and slave replication.
It is free and relational database. It is designed to handle high level of workloads and it's easy to learn. The languages supported by Postgre SQL are .Net, C, C++, Python, and Sql etc..
