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Modify a sequence:
ALTER SEQUENCE SEQSS
INCREMENT 2
MAXVALUE 3000;
Removing a sequence:
DROP SEQUENCE SEQSS;
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Find out the names of all employees who work for first Bank Corporation from database. SELECT EMPLOYEE_NAME FROM WORKS WHERE COMPANYNAME = ‘First Bank Corporation';
What is Functional Dependency? A Functional dependency is shown by X Y among two sets of attributes X and Y that are subsets of R specifies a constraint on the possible tuple
A database administrator''s responsibilities and data contents
Explain data abstraction? Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is
An entity type usually has an attribute whose values are distinct for every individual entity in the collection. Such an attribute is known as a key attribute and its values can be
what is primary key
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
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