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What is a state chart diagram?
State diagrams (State Chart Diagram) explain all possible states that a particular object can get into, and how object's state changes as result of events which reach the object. It states all the possible states and the transitions.
Define the terms i) DDL ii) DML DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data def
UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples
Advantages of Database management system Let us summarize the advantages. Reduction of Redundancy: This is perhaps the most important advantage of using DBMS. Redundancy i
At its most essential level the DBMS architecture can be divide into two parts: the back end and the front end. The back end is responsible for managing the physical database an
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
explain participation constraints with examples
I have to create a database about anything of my choice. It has to contain 4 queries, and 4 forms. It can be anything as simple as a shoe inventory with numbers - is this a service
What is Relational Algebra? Relational algebra is a Procedural query Language?
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
Safe Banking is a Canberra based credit union, which has several branches around Canberra and Queanbeyan. YOU have taken over Safe Banking. YOU need to create a database that organ
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