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Which database object does not physically exist?
A view database object does not physically exist.
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
In tuple relational calculus P1 → P2 is equivalent to ? A In tuple relational calculus P1→ P2 is equivalent to ¬P1 V P2. (The logical implication expression A B, meaning
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
complete assignment on the above title.
SELECT Statement This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
PART MARKING: We will only mark TWO of the four questions below but you must submit answers to all four. We will choose the questions we mark randomly and we will supply you with
what is union compatable?
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
What is Stored Procedure? A stored procedure is a named group of SQL statements that have been previously formed and kept in the server database. Stored procedures accept input
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