plz explain parlla distribution and subtable concept in teradata
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Answer Posted / karthik
parlla distribution:
This is the key concept of Teradata storing data in parallel, as it uses PI to store data, data is is stored parallel across the AMP's available.
Sub table: This table is created when a Unique secondary Index is created on the table, it will have rowid,data and hash value for the data. It is used to fetch the data using secondary index.
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