Question

what is DBMS ? Write about different kinds of DBMS and also write its advantages and disadvantages

Answer 1

Database is a collection of records. Database management systems are designed as the means of managing all the records. 


Advantage 

Hierarchical database can be accessed and updated rapidly because in this model structure is like as a tree and the relationships between records are defined in advance. This feature is a two-edged.

Disadvantage 

This type of database structure is that each child in the tree may have only one parent, and relationships or linkages between children are not permitted, even if they make sense from a logical standpoint. Hierarchical databases are so in their design. it can adding a new field or record requires that the entire database be redefined. 

Answer 2

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What is DBMS

• ⟹ DBMS software primarily functions as an interface between the end user and the database, simultaneously managing the data, the database engine, and the database schema in order to facilitate the organization and manipulation of data.

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Advantages of DBMS

• ⟹ Data Redundancy
• ⟹ Data Inconsistency
• ⟹ Data Sharing
• ⟹ Data Searching
• ⟹ Data Security
• ⟹ Data Concurrency
• ⟹ Data Integration
• ⟹ Data Access
• ⟹ Decision making

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Disadvantage of DBMS

• ⟹ High Cost.
• ⟹ Size.
• ⟹ Database Failure.
• ⟹ Database Failure
• ⟹ Increased Staff Cost.
• ⟹ Requirement of Technical Staff.
• ⟹ Cost of Data Conversion.
• ⟹ Performance.

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