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Explain what is Aggregation ?
Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in the ER Model. This is shown by placing the relationship between two entities along with the entities in a box and setting up a relationship between this box and another entity.
how many hourse have been spent on a certain project
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Differentiate between a unique key and a primary key. - By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
Accessing information about permissions to all users- Object level permissions: With the use of data dictionary you can see the permissions to user. Let us get the table name fro
what is check point in database management system
Define Signal. It allows methods to respond to events triggered by themselves or by other processes. Each signal corresponds to an exacting event. A signal is represented in Sy
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
Which model is record based logical model? Network Modelis basically known as record based logical model.
what is inverted and multilist structure
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