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In E-R Diagram how derived attribute are represented ?
In E-R Diagram By Dashed ellipse derived attribute are represented.
Let us first describe the term relationships. What Are Relationships? A relationship can be defined as: A set of associations or connection, or A rule for communic
Removing a Synonym: DROP SYNONYM D30;
Saving Derived Attributes to Avoid Re-computation Data that is derived from other data should be stored in the computed form to avoid re-computation. For this, we could define
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
Explain the uses of deadlock It will lead to deadlock since this is the only place where incoming acknowledgements are processed. Without this code, sender will keep timing ou
Define outer union operation of the relational algebra. Compute the outer union for the relations R and S given below. Outer Join - If there are any values in one tabl
1. Based on the dependency diagram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table (as shown in class). Label the types of depe
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
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