This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case

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This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case.

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Background

You have a database named Sales.

The Customer table includes a column that stores the date for the last order that the customer placed.

You plan to create a table named Leads. The Leads table is expected to contain approximately 20,000 records. Storage requirements for the Leads table must be minimized.

Tables

The Leads table must include the columns described in the following table.

The data types chosen must consume the least amount of storage possible. You need to select the appropriate data types for the Leads table. In the table below, identify the data type that must be used for each table column. NOTE: Make only one selection in each column.

View Answer

Answer:

Explanation:

LeadID: smallint

IsCustomer: bit Bit is an integer data type that can take a value of 1, 0, or NULL. The SQL Server Database Engine optimizes storage of bit columns. If there are 8 or fewer bit columns in a table, the columns are stored as 1 byte. If there are from 9 up to 16 bit columns, the columns are stored as 2 bytes, and so on.

References:

https://docs.microsoft.com/en-us/sql/t-sql/data-types/int-bigint-smallint-and-tinyint-transact-sql

https://docs.microsoft.com/en-us/sql/t-sql/data-types/bit-transact-sql