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What is the used of specifying alias?
Specifying alias: is used to rename column or attribute in a table.
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Normalize the following table upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the t
Foreign Keys and NULL Let us take the relation: DEPT DEPT ID DNAME BUDGET D1 M
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
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,
What is an object design? Object design is a very interactive method, which decides the relationship among objects, classifies operations on classes, determines overall system
The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
Describe logical data independence ? Logical Data Independence - It is the capacity to modify the conceptual schema without having to change external schemas or application p
Data Manipulation Language Data manipulation language (DML) describes a set of commands that are used to query and change data within existing schema objects. In this case comm
What are the time stamps associated with each data item? W-timestamp (Q) denotes the largest time stamp if any transaction that implemented WRITE (Q) successfully. R-timesta
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