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What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
How is the database organised in Oracle? Database organized within Oracle in terms of table and table holds attributes and values. A database consists of one or more logical
Write the motivations led to development of OO-DBMS? 1. Programmer frustration with RDBMSs. 2. Requirement for special features.
construct a b-tree for the following set of key values 2,3,5,7,11,17,19,23,29,31.assume that the tree is initial empty and the values are added in ascending order
What is Cross Product? Simply Cross product is Binary Operator
Explain the function of input controls. Identify four types of input control and explain the function of each. Provide an example of a data integrity error that could occur i
coventions for displaying an ER schema as ER diagram
Draw entity relationship diagram for the following scenario. A university has many departments whereas each department belongs to that particular uni. That uni has also many bui
how design database from begining
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
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