A database, as we know it, is a collection of inter-related data that is organized in the form of views, tables, schemas, reports etc. The system or software that is used for creating and managing database is known as a database management system or DBMS. Oracle and MySQL are some of the popular database management used in various applications. These systems are widely used in universities to manage the data of students, faculty, admin, and staff.
What does a DBMS manage?
A database management system manages three important things. First, they organize the data; second, they allow the data to be accessed, modified and locked; and third, they define the logical structure of the database. These three essential elements help in providing data integrity, security, concurrency, and consistent administration procedures. A typical DBMS will support the following administrative tasks:
1. You can create, modify, and remove the definitions to properly organize the database for further use.
2. You can update the database by inserting new data, editing the existing one and deleting the actual data from the database.
3. You can retrieve data from the database at any time for different applications
4. The system also allows you to register and monitor users, review performance, enforce data security, maintain the integrity of data and recover any file or data at any time.
The database management software also takes care of restarts, automated rollbacks, multiple logins and auditing of activities performed on the database. The software provides users with a centralized control of data, which can be easily accessed at any time from multiple locations and by multiple users, of course in a controlled manner.
Furthermore, the software comes with a lot of settings that allows you to restrict the data accessible to the end user. You can not only control what data the end users sees, but also how he views the database as there are multiple views available for a single database schema.
Another amazing advantage of the system is that it offers physical and logical data independence. The software programs and end users don’t need to know where the data is physically located or what type of storage or hardware it resides in. As long as software programs use the API (application programming interface) provided by the DBMS, developers don’t need to modify programs everytime the database is updated.
What are the popular types of database management systems
The relational database management system or RDMS are easily adaptable to different types of databases but they can be very expensive.
Columnar database management system or CDBMS is suitable for data warehouses that contain a large number of similar data records.
NoSQL DBMS are perfect for the loosely defined data structures that will likely expand and change a lot with time.
Cloud-based data management system is a cloud service provider that is responsible for providing as well as maintaining the DBMSes.
The in-memory database management system or IMDBMS offer quicker response times and much better performance.
Advantages of using database management software
Perhaps the biggest advantage of using a DBMS is that it allows large organizations like universities and hospitals maintain a well-organized record, retrieve information at any time and update it with ease.
Data is best maintained and protected when it is shared using a system instead of creating new versions of the same data and storing it in new files for different applications.
Another great advantage of using a DBMS is that it provides a centralized space for storing data that can be accessed by multiple people at the same time, from different locations, using multiple logins. It also provides different views of the same database schema.
Although, a DBMS comes with a lot of benefits, let’s not forget that the additional work also brings overhead. The software uses more memory and CPU than any ordinary file storage system. Furthermore, different types of DBMSes will require different system levels and resources to operate.