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DBMS
navin kumarWhat is the difference between unique key and primary key?
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vikassingh8126
DBMS- It stand for Data Base management system. Itis made up of 2 terms data base+management system.
Database is the storage place or we can say warehouse of data and the Information.
management system- It is usually known as the Management department.
The role of management is to make the right actions and working to utilise the data for appropriate actions and processes.
So the Database management system is responsible for the data management which is stored in the Database of any Organisation.
Some examples of databae are Oracle 10g etc.
sameer singh
DBMS:- it stands for ‘Data base management system’.
It is made up of 2 parts ‘data base’ and ‘management system’.
Data base:- it is the storage place of data and instruction or we can a warehouse.
Management system:- is usually known as management department.
the main role of managemnt is to make a right action so as to utilise the data more carefully and accuately.
It is of 2 types:-
1.Database management system
2.RDBMS(relational database managemnt system)
example:- oracle 10g etc….
thakur.akhil.singh93
DBMS means Database Management System . DBMS includes 2 words – ” Database ” which means one base where all the data of one company is stored together or the related data stored together in one place & ” Management System ” which means a management of a system . DBMS is combining of these 2 – the storage , update , deletion , addition – all the manipulation of the data is done at one place . DBMS includes different keys like primary key .foreign key , super key .
There is only one primary key in one databse. It is used to uniquely define all the entries about one thing . Primary key cannot store a null value .
The unique key is a key which can store a null value . This is the main diffrence in primary key & unique key .
rohit kumar
Databases are set up so that one set of software programs provides all users with access to all the data. A database management system .DBMS is a suite of computer software providing the interface between users and a database or databases.
sanyogitaholkar
DBMS database management system is a system that helps to retrieve and store the data .
primary key does not have null value
whereas unique have the null value.