Reducing storage requirements

While it is often tempting to include as much data as possible, this can also make your data model more complex than it needs to be. Additionally, as QlikView uses an in-memory database, it is also a good idea to not waste resources. RAM is still a much scarcer resource than disk-based storage.

Using number-based key fields

When linking between tables using key fields, it is advisable to use numbers as key values instead of text. The AutoNumber() script function can be used to generate a unique integer value for an expression or compound key, thus compacting the occupied RAM space.

Consider, for example, the following list of colors and their corresponding value assigned by the AutoNumber() function. As each new value appears in the list, a consecutive number is assigned. All subsequent appearances of the same value will take the value assigned to the first instance. For example, all appearances of the Blue color have been assigned the number 2, as it is the second...