-
memory allocation while using lookup stage
Hi friends, i know while using lookup stage if the lookup table has huge amount of data we will go for sparse lookup or else will use normal lookup. would anybody explain how the memory will be allocated for both type of lookups?
-
-
-
-
What are Data Marts
Data Mart is a segment of a data warehouse that can provide data for reporting and analysis on a section, unit, department or operation in the company, e.g. sales, payroll, production. Data marts are sometimes complete individual data warehouses which are usually smaller than the corporate data warehouse.