Question: 1. In the process of query optimization, query cost refers to: a) How long it takes to execute a query. b) How much electricity is

1. In the process of query optimization, query cost refers to:

a) How long it takes to execute a query.

b) How much electricity is used to execute a query.

c) How much hard drive and memory is used to execute a query.

2. The data dictionary created by the_______is often referred to as the catalog.

a) DBMS

b) TCL

c) DML

d) DCL

e) All of the above

d) How many query hints were used to execute a query.

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