The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds ...

SCL provides a set of functions for creating and manipulating SAS table indexes. However, SCL functions are just one way of building and querying SAS table indexes. Other ways include: the DATASETS ...

As with everything, there are trade-offs when it comes to indexes. That said, this discussion focuses on query optimi­zation by looking at table indexes or the lack thereof. A sign of a good database ...

However, each step in creating a table of contents (TOC), index, or frame is simple in itself, and, once one is added, you can edit the result exactly as you would the contents of any text frame.