Technology with its advancement has made a great impact on some the basic work of mankind. For an instance, it was a manual work to store the data of your customer as well as the purchase previously. But gone are those days with the introduction of database management system.
What is DBMS?
The database management system can be defined as a collection of information. It can store your data as long as for a few years provided you stored the data in your system. These reduce error in your process. Further you can retrieve and add new entries to your system over times.
A DBMS can be helpful in many ways. A lot of time can be saved by not going through the old documents again and again but just a few clicks. Whereas you need the help of SQL server support to complete any transaction efficiently, SQL means structured Query Language. The SQL manages the data and allows you to work in a network. You can access and request data that SQL server covers.
A database management program can be said to be a set of programs which allows you to store, modify or extract your required information from a database. Further it also maintains the security and integrity of the stored data with the option of recovering it if the system fails.
A Database Query Language
A database query language allows the user to interrogate the database as required or analyse or update it as per requirement. It also takes care of the security of your database. Data security prevents unauthorized individual to view or update the data.
Database Transaction Mechanism
A database transaction actually guarantees ACID property to ensure data integrity irrespective of multiple users accessing the database simultaneously.
- Atomicity: It retains that the effect of all transactions remains or none of them remains after they are committed.
- Consistency: The database should remain consistent after every transaction i.e. the predetermined integrity of the database.
- Isolation: This property takes care of the fact that no simultaneously running transactions do not interfere with each other.
- Durability: This property checks that the effect of the transactions retains once the transaction is committed even after a power-failure, etc.
Concurrency Control, Locking And Isolation Of Data
- Concurrency control refers to the mechanism which guarantees isolation and correctness of data.
- Isolation ensures the multiple users to operate on the data simultaneously without any problem or disturbing the database.
- Locking is the one of the most commonly used concurrency control methods. It locks the access to a certain database for a particular transaction. Depending on the type of operation i.e. write or read locks can be postponed.
Advanced Database Management System
A common example of Database Management System Solutions is Distributed system (DDBMS), where the data belongs to a single user but is distributed over a few systems or referred as a site in this system. The two aspects to be considered while talking about DDBMS are as follows:
We can distinguish a distributed database system from the fact that they are maintained by a single centralized system.
- Logical co-relation:
The fact that these data have some properties in common and they are correlated. We easily distinguish a set of distributed databases from a set of local database of files which are residing in different sites in the network.
The potential of DBMS software is discovered by too many industries now. Libraries or bookstore finds it more convenient to store the books according to the authors, contents, etc. Also airlines and hotels are installing these applications to make their system work more efficiently. As a whole, we can conclude that use DBMS systems are known to more and more industries now.