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A table joined with itself is called ? A table joined with itself is known as self join table. Normal 0 false false false EN-IN X-NONE X-NONE
what is entity in database system?
Defining Internal Classes and Operations When we enlarge algorithms, new classes can be added to the store intermediate results. A complex operation could be looked at, as a c
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
Explain the θ-join and equijoin Refer tables Car and Boat which list models of cars and boats and their relevant prices. Assume a customer wants to buy a car and a boat, but sh
Write short notes on relational constraints? Relational Constraints are: 1. NOT NULL 2. Unique 3. Primary key 4. Foreign key 5. Table check
Let us now make the E-R diagram for the student database as per the explanation given in the previous section. We can also states the overall logical structure of a database usi
Critically explained the benefits and limitations of different database technologies with proper examples
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
(a) Why did SAP introduce the extended star schema?
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