1. What are the common features of a Database Management System? A  database management system stores data so that information can easily be retrieved, manipulated and produced. DBMS enables users to create their own databases according to the requirement. The unique features of a database management system provides a lot of advantages to its users. In general, a DBMS manipulates data, data format, field names, record structure and file structure itself. It also lays down rules for validating and manipulating these data. A DBMS relieves users of data maintenance framing programs. Some of the DBMS examples are- • SQL Server • MySQL • dBASE • Oracle   • FoxPro A modern-day DBMS is more realistic in designing its architecture using real- world entities. DBMS also stores data- based metadata in order to facilitate its own process. A DBMS can supply greater consistency than earlier data storage systems like file- processing applications. In short, the Database Management System (DBMS) refers to the technology of users’ data storage and retrieval with the utmost efficiency and appropriate safety measures. DBMS enables users to create their own databases according to the requirement.

3. The database is a collection of related data, which is a collection of facts and figures for the production of information. These databases are extremely configurable and are available. A database management system stores data so that information can easily be retrieved, manipulated and produced. Features of DBMS The modern-day DBMS has the following features- Real-world entity- A modern-day DBMS is more realistic in designing its architecture using real- world entities. It also uses behaviour and attributes. A school database, for example, can use students as an entity and their age as an attribute. Data & application isolation- A database is an active entity, while the data on which the database works and organizes is said to be passive. DBMS also stores data- based metadata in order to facilitate its own process. Relation-based tables: DBMS enables tables to be formed by entities and relationships. A user can understand the database architecture only by viewing the names of the table. Consistency: Consistency is a state in which all relationships are kept in a database remains the same. The existing methods and techniques can detect attempt to leave inconsistent database. A DBMS can supply greater consistency than earlier data storage systems like file- processing applications. 

4. Less Redundant: DBMS follows the normalization rules that divide a relationship when any of its attributes is redundant in values. Normalisation is a mathematically rich and scientific process, which reduces redundancy of information. ACID properties: DBMS follows ACID (atomicity, consistency, isolation and durability) concepts. These are applicable to transactions that manipulate data in a database. ACID properties help to keep the database healthy in multi-transactional setting and in case of failures. Multiple Views: For different users, DBMS offers multiple views. A user in the department of sales will have a different view of the database than a person in the department of production. This feature allows users to view the database in a concentrated manner as required. Query Language: DBMS has a query language that makes retrieving and manipulating data more efficient. A user can use as many and as many filtering options as necessary to obtain a data set. Where file processing system was used, it was not traditionally possible. Security: DBMS offers a wide range of security features that allow multiple users to see different features. A user in the sales department, for example, can not see the data belonging to the purchasing department. Since a DBMS is not saved as traditional file systems on the disk, miscreants cannot break the code easily. 

5. Key Points Database Management System has these following features- Real-world entity- A modern-day DBMS is more realistic in designing its architecture using real- world entities. Data & application isolation- DBMS also stores data- based metadata in order to facilitate its own process. Consistency: A DBMS can supply greater consistency than earlier data storage systems like file- processing applications. Less Redundant: DBMS follows the normalization rules that divide a relationship when any of its attributes is redundant in values. ACID properties: DBMS follows ACID (atomicity, consistency, isolation and durability) concepts. ACID properties help to keep the database healthy in multi-transactional setting and in case of failures. Security: DBMS offers a wide range of security features that allow multiple users to see different features. Published by Brainware University