IT Specialist INF-201 Dumps

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IT Specialist INF-201 Exam Test Questions

In SQL, which of the following guarantees that an index is organized by the actual data values?

• Non-clustered index
• Clustered index
• Composite index
• Unique index

Answer: B

When should you use a non-clustered index?

• When the table has very few rows
• When you want to optimize access to data by multiple columns
• When you want to sort data in its natural order
• When the table is read-only

Answer: B

How would you change a column definition using the ALTER TABLE statement?

• ALTER TABLE table_name MODIFY column_name datatype;
• ALTER TABLE table_name CHANGE column_name datatype;
• MODIFY TABLE table_name ALTER column_name datatype;
• UPDATE TABLE table_name SET column_name = datatype;

Answer: A