what are database ? Explain each of them
Answers
Answer:
he database is an organized collection of structured data to make it easily accessible, manageable and update. In simple words, you can say, a database in a place where the data is stored. The best analogy is the library. The library contains a huge collection of books of different genres, here the library is database and books are the data.
In layman terms, consider your school registry. All the details of the students are entered in a single file. You get the details regarding the students in this file. This is called a Database where you can access the information of any student.
Facts about Database:
Databases have evolved dramatically since their inception in the early 1960s.
Some Navigational databases such as the Hierarchical database and the Network database were the original systems used to store and manipulate data. Although these early systems were actually inflexible
In the early 1980s, Relational databases became very popular, which was followed by object-oriented databases later on.
More recently, NoSQL databases came up as a response to the growth of the internet and the need for faster speed and processing of unstructured data.
Today, we have cloud databases and self-driving databases that are creating a new ground when it comes to how data is collected, stored, managed, and utilized.
How to Create a database?
We use the CREATE DATABASE statement to create a new database.
Syntax:
1
CREATE DATABASE databasename;
Example:
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CREATE DATABASE College
So the database of name College will be created.
This is how simple you can create a Database.
Database Components
The major components of the Database are:
Hardware
This consists of a set of physical electronic devices such as I/O devices, storage devices and many more. It also provides an interface between computers and real-world systems.
Software
This is the set of programs that are used to control and manage the overall Database. It also includes the DBMS software itself. The Operating System, the network software being used to share the data among the users, the application programs used to access data in the DBMS.
Data
Database Management System collects, stores, processes, and accesses data. The Database holds both the actual or operational data and the metadata.
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