A database management system (DBMS) is a software application that enables users to quickly construct, design, and edit databases in order to store, process, and analyse data.
A database management system (DBMS) provides an interface or a tool for doing various tasks, such as creating databases, putting data in them, updating data, creating database tables, and so on.
The DBMS also ensures the privacy and security of databases. It also maintains data consistency when there are multiple users.
Some Example of DBMS :
- MySql
- Oracle
- SQL Server
- IBM DB2
Purpose of database system
It is a collection of tools that enable users to create and manage databases. In other words, it is general-purpose software that allows users to create, manipulate, and design databases for a number of purposes.
Database systems are design to deal with large volumes of data. Data management comprises both the construction of data storage systems and the provision of data manipulation methods. Furthermore, the database system must maintain the security of the information held despite system crashes or attempts at unauthorized access. The system must avoid any unexpected effects if data is to be shared across multiple users.
The database applications were built on top of the file system.
The goal of a database management system (DBMS) is to transform the following:
1. Data into information.
2. Information into knowledge.
3. Knowledge of the action.
Characteristics of DBMS
- Firstly, It manages and stores information in a server-based digital repository.
- Secondly, It can logically and visibly represent the data transformation process.
- Automatic backup and recovery techniques are built into the database management system.
- It has ACID features, which ensure that data is safe even if the system fails.
- It has the ability to make complex data connections more understandable.
- It’s utilise to help with data manipulation and processing.
- It is utilise to keep information safe.
- Lastly, It can examine the database from a variety of perspectives, depending on the needs of the user.
Advantages of DBMS
- Firstly, Because it saves all of the data in a single database file and that record data is saves in the database, it can control database redundancy.
- Data sharing: Authorised users of a database management system can share data with a large number of other users.
- The database system is relatively easy to maintain due to its centralised architecture.
- It saves time by lowering the time it takes to create a product as well as the time it takes to maintain it.
- Backup: It consists of backup and recovery subsystems that create automatic data backups in the case of hardware or software failures and restore the data if necessary.
- Lastly, It offers graphical user interfaces and application programme interfaces, among other options.
Disadvantages of DBMS
- Hardware and software costs: To operate DBMS software, you’ll need a fast data processor and a lot of memory.
- Size: To run them efficiently, it takes up a lot of disc space and RAM.
- Complexity: The database system adds to the complexity and demands.
- Failure has a greater impact on the database since most organisations keep all of their data in a single database, and if the database is damage due to an electric outage or database corruption, the data might lost permanently.
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