070-463 Latest Exam Braindumps
Question 6: A SQL Server Integration Services (SSIS) package imports daily transactions from several filesinto a SQL Server table named Transaction. Each file corresponds to a different store and is imported
in parallel with the other files. The data flow tasks use OLE DB destinations in fast load data access
mode.
The number of daily transactions per store can be very large and is growing. The Transaction table
does not have any indexes.
You need to minimize the package execution time.
What should you do?
A. Run the package in Performance mode.
B. Increase the value of the Row per Batch property.
C. Partition the table by day and store.
D. Create a clustered index on the Transaction table.
Correct Answer: B
Explanation
* Data Access Mode - This setting provides the 'fast load' option which internally uses a BULK INSERT
statement for uploading data into the destination table instead of a simple INSERT statement (for
each single row) as in the case for other options.
* BULK INSERT parameters include:
ROWS_PER_BATCH =rows_per_batch
Indicates the approximate number of rows of data in the data file.
By default, all the data in the data file is sent to the server as a single transaction, and the number of
rows in the batch is unknown to the query optimizer. If you specify ROWS_PER_BATCH (with a value
> 0) the server uses this value to optimize the bulk-import operation. The value specified for
ROWS_PER_BATCH should approximately the same as the actual number of rows.
