Relational set operators in dbms uses algebra to manipulates contents in a data base. there are many different operation in Dbms ,they are :-
1.Union
2.intersect
3.Product
4.select
5.Project
6.divide
In DBMS the data is stored in the form of table . Each row in DBMS is known as tuple.
The main set operations are: union, intersection and complement.
In Set Theory: a set is closed under an operation if performance of that operation on members of the set always produces a member of the same set.In Topology: a closed set is a set which contains all its limit points.
Given a set and a binary operation defined on the set, the inverse of any element is that element which, when combined with the first, gives the identity element for the binary operation. If the set is integers and the binary operation is addition, then the identity is 0, and the inverse of an integer k is -k. If the set is rational numbers and the binary operation is multiplication, then the identity element is 1 and the inverse of any member of the set, x (other than 0) is 1/x.
DBMS stands for database management system. DBMS reduce data redundancy as it checks if the data is duplicate and if duplicate then store it as a single record.
data dictionary and transaction log
DBMS stands for DataBase Management System. The main concepts are the structure, the manipulation, and a set of integrity rules.
A set is not an operation.
the process of designating subgroupingswithin an entity set
Know what you need and check each need is met by the product
Since relation is a set, and tuples are element of a set, according to set theory, the elements of a set are not ordered.
transaction
Search operation in static hashing is time consuming, but in dynamic hashing it is not.
a lock is variable associated with a data item that describes the status of the item with respect to possible operation that can be applied to it.
NA_ what are highlights of advanced DBMS what are highlights of advanced DBMS what are highlights of advanced DBMS
collection of interrelated data & set of program & access those programITS GOALprimary goal of dbms is store & retrieve the database information in convenient & efficient way
no, Java is not dbms.. Java is a programming language Dbms is database