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Evaluate, compare and contrast the two methods of relational database design namely top down method and Bottom up method. What will be your choice if you are asked to select a method? Justify your choice.
Let us now talk about the relational operations: SELECT The select operation is used to select few specific record from the database based on different criteria, This is a un
Project: Microsoft Access You have been asked by the ABC Tanning Salon to create a database that can be used to track the salon's customers. You are to create a table in Access
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Define Outer join Outer join - If there are any type of values in the one table that do not have corresponding value(s) in the other, in an equi-join which will not be selected
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
define normalisation and functional dependency
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
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