what is database management system - Wikitechy

What are the types of databases ?

webmaster — Wed, 26 Oct 2022 09:02:24 +0000

The different types of databases are:

In this database data is organized in a tree like structure.
Data is stored in the form of either top down or bottom up approach.
Data in this database is represented in the form of parent-child relationship.
In this database parents have many children but child can have only single parent.

In database children can have more than one parents.
Many to many relationship complexities can be reduced in this database.
Here entities are organized in a graphical format which can be accessed through several paths.

One of the widely used and easy to use database is relational database.
Normalizing of data in the row and column can be acheived using relational database.
These relational models are stored in fixed structures and are manipulated using SQL.

Data in these database are stored in the form of objects.
The structure that displays data within it is are called as classess.
Class is a component of database that displays database as a collection of objects which can store both data members values and operations.

Databases that gets created and updated in real time is called as Operational Database.
These types of databases are designed for executing and handling daily operations like per day transactions of several business.

For managing huge amount of data organization or enterprise uses these types of database and it helps them to increase and improve their efficiency.
Simultaneous access to multiple users can be done using these databases.
We can use Multiple process on these type of databases.
Parallel execution of queries on the system is allowed in these databases.

webmaster — Sat, 20 Aug 2022 08:25:40 +0000

Database Management System is classified into four types:

It is a tree like structure where the data is stored in form of a tree.
In this type of database the parent may have many children but child should have single parent.

This relational database is represented in the form of a table.
Values in rows and column are associated with each other. This database is widely used as it is very easy to use.

Editor — Mon, 19 Jul 2021 10:29:18 +0000

D) all the above

Answer : D) all the above

A database management system (DBMS) is a software package designed to define manipulate, retrieve and manage data in a database.
A DBMS mostly manipulates the data itself, the data format, field names, record structure and file structure. It also defines rules to validate and manipulate this data.
A DBMS relieves users of framing programs for data maintenance. Fourth-generation query languages, such as SQL, are used along with the DBMS package to interact with a database.
Some other DBMS examples include:
- MySQL
- SQL Server
- Oracle
- dBASE
- FoxPro

Characterstics of DBMS

Data abstraction and independence.
Data security.
A locking mechanism for concurrent access.
An efficient handler to balance the needs of multiple applications using the same data.
The ability to swiftly recover from crashes and errors, including restartability and recoverability.
Robust data integrity capabilities.
Logging and auditing of activity.
Simple access using a standard application programming interface (API).
Uniform administration procedures for data.

Characteristics of DBMS

One of the most advantages of using a DBMS is that it lets end users and application programmers access and use the same data while managing data integrity.
Data is better protected and maintained when it can be shared using a DBMS instead of creating new iterations of the same data stored in new files for every new application.