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(a) What is a Sub-Query?
(b) What is the difference between a scalar sub-query and a tabular sub-query?
(c) Write an equivalent SQL statement to get the Name of Product which has the same price list as the Chainring Bolts. Use the following relational schema to answer this question: Production.Product (ProductID, PName, ListPrice)
(d) Convert the following SQL Statement to display the same result by using a sub-query instead of the join.
SELECT p.Name, p.ProductNumber FROM Production.Product p JOIN Sales.SalesOrderDetail AS sod ON p.ProductID = sod.ProductID WHERE sod.OrderQty > 41
(e) SQL Server may produce unexpected results when performing calculations on columns that have NULL values. So, to resolve this problem you need to use the ISNULL, NULLIF, and COALESCE functions of SQL Server 2005 when your columns hold NULL values. Explain briefly the purpose of each of the above function and support your answer with an appropriate example.
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Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
Why does a DBMS query language is designed? A DBMS query language is designed to support end users who use English-like commands. support in the development of complex applicat
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The Enhanced Entity Relationship Diagram (ERD) produced with a drawing or case tool. Your EERD must use a ''standard'' notation style such as Crows Foot or Chen. Please note that t
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Give some encryption techniques? A) DES B) AES C) Public key encryption
Problem 1. Write the SQL queries using Data Manipulation Language (DML) statements. Insert values into student table with field names using insert command Display the
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