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Explain the two types of participation constraint.
Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates in at least one relationship in R.
Partial: if only some entities in E participate in relationships in R, the participation of entity set E in relationship R is said to be partial.
what are the limitations of dbms?
This language that enable user manipulate to or access data as organized by appropriate data model. Low level or Procedural DML : DML needs a user to specify what data ar
Types Of Indexes One of the words used during the file organisation is the term index. In this part, let us describe this term in more detail. We find the index of keywords
Q. With the help of a suitable diagram gives module wise explanation of system architecture of DBMS. Sol. A Database management is a collection of interrelated data and col
What is transaction? Collections of operations that form a single logical unit of work are known as transactions.
I have to solve a problem using access
What is a guard condition? Explain it with a suitable example. The guard-condition is a Boolean expression written with respect to parameters of triggering event and attributes
Multiple column Queries: Syntax: SELECT COLUMN1, COL2,...... FROM TABLE WHERE (COLUMN1, COL2, ...) IN (SELECT COLUMN1, COL2,.... FROM TABLE WHERE );
What are the advantages of creating a table from existing table?
What are the Objectives of object design After going through this unit, you could be able to: explain steps of object design; discuss algorithms that reduce costs;
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