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In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
Why is database redesign necessary? Database redesign is essential for two reasons. First, redesign is essential both to fix mistakes made during the initial database design. S
List some instances of collection types? a) sets b) arrays c) multisets
Use again the GE Flight Quest Data and build on the work done for homework 1 and 2. The goal is to create a classification model which classifies flights into "on-time" (you can de
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
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let us consider a table having 2200 records and the fixed size of the table to be considered as 25.then how many numbers of table is requredto perform horizontal fragmentation
Relationship between Security and Integrity: Database security usually refers to access, while database integrity refers to avoidance of accidental loss of consistency. But usually
SET concept is used in which type of modelling? SET concept is used in Network Model.
An entity set that does not have sufficient attributes to form a primary key is called? An entity set that doesn't have sufficient attribute to form a primary key is known as w
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