Share some IBM Certified Database Administrator C2090-600 exam questions and answers below.
Which of the following statements about compression for BLU MPP tables is TRUE?
A. Compression must be explicitly enabled for BLU MPP tables
B. Compression requires decompression to evaluate partition joins
C. Unique compression dictionaries are generated for each partition
D. Each table has a single compression dictionary that getsreplicated across all partitions
Answer: D
Which statement about NOT ENFORCED unique constraints is TRUE?
A. NOT ENFORCED unique constraints can not be defined on primary key columns
B. The query optimizer will consider a NOT ENFORCED unique constraint when selecting an optimal data access plan
C. When attempting to insert data that does not conform to a NOT ENFORCED unique constraint, awarning will be returned
D. Storage requirements for a NOT ENFORCED unique constraint are no different than the storage requirements for a similar unique index
Answer: A
If Secure Sockets Layer is a requirement, which of the following parameters must be set to encrypt data in transit?
A. Set the DB2COMM registry variable to DB2COMM=SSL
B. Set the DB2COMM registry variable to DB2COMM=SSL, TCPIP
C. Set the AUTHENTICATION configuration parameter to DATA_ENCRYPT
D. Set the AUTHENTICATION configuration parameter to SERVER_ENCRYPT
Answer: B
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