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Suppose that in an organisation, an employee may do different roles in dissimilar projects. Say, RAM is doing coding in one project and doing designing in another. Suppose that the
How to create a table from existing table? Create table as e.g, To create a new table ‘N_emp' with employee names and their identification numbers only from employee ta
The participation Constraints shows whether the existence of an entity depends on its being associated to another entity by the relationship type. There are two kinds of participat
Problem 1 Why are the operational system keys not recommended for forming data warehouse primary keys? Give any two examples 2 Explain the following performance tuning techn
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
List and also explain the dissimilar stages of DDLC ?
sql is relationally complete-justify
Describe the static hash file with buckets and chaining and show how insertion, deletion and modification of a record can be performed. In static hash file organization, the wo
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
ER diagram on cosmetics
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