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crete a data base relationship model
Entity:
Attributes of students:
Relationship ratios:
Foreign keys
This is the referencing relation of the column i.e. student advisor
Primary keys
They identify the column i.e. the Sname.
Assumptions
What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
DISADVANTAGES OF RDBMS
What is self-transition? If there is a transition which goes back to same state, it is known as "self- transition." With a trigger action exit action would be executed f
prototype of a distributed information system for a national car part retail outlet chain.
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
waht is a repeating group?
What is the major advantage of object-oriented programming paradigm? The ability to modify the explanation of an object without affecting the rest of the system is the main adv
What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
how many hourse have been spent on a certain project
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