A database is a systematic or organized collection of related information that is stored in such a way that it can be easily accessed, retrieved, managed, and updated. It is where all data is stored, very much like a library that houses a wide range of books from different genres. Think of data as books.
In a database, you can organize the data in rows and columns in the form of a table. Indexing the data makes it easy to find and retrieve it again as and when required. MySQL, SQL Server, MongoDB, Oracle Database, PostgreSQL, Informix, Sybase, etc. are all examples of different databases. These modern databases are managed by DBMS. Structured Query Language, or SQL as it is more widely known, is used to operate on the data in a database.
There are various types of database structures:
Hierarchical database: Hierarchical database follows a ranking order or a parent-child relationship to structure data.
Network database: Network database is similar to the hierarchical database but with some changes. The network database allows the child record to connect with various parent records, therefore, allowing two-directional relationships.
Object-Oriented database: Here, the data is represented in the form of objects, as in object-oriented programming
There are many applications where databases are used.
1. Universities: Universities have so much data which can be stored in the database, such as student information, teacher information, non-teaching staff information, course information, section information, grade report information, and many more. University information is kept safe and secure in the database.
Which of the following is not a example of database? | |||
Right Option : D | |||
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Hierarchical database follows a ranking order or a ______________ relationship to structure data. | |||
Right Option : B | |||
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____________________ is a collection of data that is stored electronically as a series of records in a table | |||
Right Option : C | |||
View Explanation |
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