Database Technet Quiz - 6

The script first checks if a table named "table_a" exists, and if it does, it drops the table. Then, it creates a new table called "table_a" with two columns: "a" with an identity starting at 50 and incrementing by 1, and "b".

Next, it sets identity_insert on for "table_a" and inserts a row with values 100 for "a" and 1 for "b". Then, it sets identity_insert off and inserts a row with a value of 2 for "b".

After that, it sets identity_insert on again and inserts a row with values 4 for "a" and 3 for "b". Finally, it sets identity_insert off and inserts a row with a value of 4 for "b".

The script then selects all rows from "table_a" where "b" is equal to 4.

The correct answer, 102,4, represents the second row inserted into the table, with "a" being 102 and "b" being 4.

The sys.sql_expression_dependencies DMV is used to find dependent Stored Procedures for a given table in SQL Server 2008 and above. This DMV provides information about the objects that depend on the specified table, including stored procedures, views, functions, and triggers. It helps in understanding the impact of any changes to the table structure on the dependent objects.

The code creates a temporary table called @TABLE and inserts rows into it using a while loop. The loop continues indefinitely until a condition is met. Inside the loop, the code checks if the value of @a is equal to 10. If it is, it inserts a row with the value of @a into the @TABLE and then returns 1, which ends the execution of the stored procedure. However, since @a is initially set to 0 and is incremented by 1 inside the loop, it will never reach the value of 10. Therefore, the loop will continue indefinitely and no rows will be inserted into the @TABLE. As a result, when the SELECT statement is executed at the end of the code, there will be no rows with a value greater than 1 in the @TABLE, resulting in no rows in the result set.

The number of execution threads in SQL Server can vary based on the number of CPUs and the server edition (32-bit or 64-bit). SQL Server can utilize multiple execution threads to process queries and perform tasks concurrently, which can improve performance and scalability. The number of threads is typically determined by the number of available CPU cores and the server edition's limitations. Therefore, the statement is true.

The first batch executes successfully because it creates a table called "existing". The second batch does not execute successfully because it tries to select from a table called "non_existing" which does not exist. The third batch executes successfully because it calls the "test_existing" procedure, which selects from the "existing" table. The fourth batch executes successfully because it alters the "test_existing" procedure to select from the "existing" table. The fifth batch executes successfully because it calls the altered "test_existing" procedure.

The query is selecting the "name" and "pkey" columns from two instances of the "dbo.Sales" table, aliased as "up" and "cp". The WHERE clause specifies that the "up.pkey" should be equal to 1 or the "cp.pkey" should be equal to 0. The ORDER BY clause is ordering the results based on the fourth column, which is "cp.pkey". Since the only row where "cp.pkey" is 0 is the second row, it will be the first row in the result set. Therefore, the correct answer is 0,0,1.

The SERVERPROPERTY function is used to retrieve various properties of the SQL Server instance, including the edition (Standard/Enterprise). It can be used to programmatically determine the edition of the SQL Server being used, which can be useful for performing different actions or implementing specific features based on the edition.

The query is selecting the ID and NAME columns from the @customer table where there is no record in the @Order table with the same ID. Since there is a record in the @Order table with ID = 1, the WHERE NOT EXISTS condition will evaluate to false for the first row in the @customer table. Therefore, no rows will be in the result set.

ENCRYPTION is the correct option to use in order to encrypt the definition of the view and prevent users of the database from seeing it. Encryption is a security measure that transforms data into a coded form that can only be accessed or deciphered with the use of a decryption key. By encrypting the definition of the view, it ensures that unauthorized users cannot view or understand the underlying structure or content of the view. This helps to protect sensitive information and maintain data privacy and security.