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Class Diagram A class diagram is required to support functional necessity of system. In a static design view, class diagram is used to model vocabulary of the system, simple c
Advantages of Observation Methods: Bailey has pointed out four advantages of observation: 1. Superior in Data Collection on Non Verbal Behavior: When a person a opi
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Whst is logical schema ? Logical schema is the entire database.
About Attribute inheritance
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Aggregation : One limitation of the E-R diagram is that they do not permit representation of relationships between relationships. In such a case the relationship along with its ent
WHAT IS SQL
Which method of access uses key transformation? A Hash method of access uses key transformation.
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