Why should we have an identity column

Assignment Help Basic Computer Science

Reference no: EM133831066

Question

Step 1: Write the code to create database named PeopleDB; execute the code and verify that your database was created.

Screenshot your code and screenshot your database. Paste in your Word doc.

Step 2: Select the table PeopleDB. Now, write the code to create table in PeopleDB called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City; execute the code and verify that your table was created.

Screenshot your code and screenshot your table. Paste in your Word doc.

Step 3: Respond to the following:

Explain why SQL is called a "set-oriented language".

Explain the purpose of indexing in database implementation; and, explain the factors to be considered in deciding whether to create an index for a column in SQL.

Why should we have an "identity" column? Explain the benefit of using the identity column in SQL.

How would you add an attribute "Birthday" to the Persons table? (write the code)

How would you remove the attribute "City" from the Persons table? (write the code)

Reference no: EM133831066

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