In computer science, a lookup table (LUT) is an array that replaces runtime computation of a mathematical function with a simpler array indexing operation, in a process termed as direct addressing.

A lookup table is normally a table that acts as a "master list" for something and you use it to look up a business key value (like "Make") in exachange for it's identifier (like the id column) for use in some …

Jul 23, 2025 · Lookup tables, also known as dimension tables, are an integral part of Power BI projects. They help establish relationships between different data tables, enabling users to slice and dice the …

Jun 28, 2024 · The lookup table can replace complex runtime calculations with simple lookup operations. For example, we can pre-calculate and store the output values of a complex math function in a …

A lookup table in Excel is a table that contains a lookup value and its return value. And we can create an Excel lookup table using the inbuilt functions VLOOKUP, LOOKUP, and INDEX-MATCH.

Aug 1, 2025 · Lookup tables are a critical feature of good database design: lookup tables store information that other tables can refer to (or look up). These other tables are typically transaction …

What Is a Lookup Table? A lookup table is essentially a data structure that associates keys (or lookup values) with corresponding values. Think of it as a reference chart or dictionary where you input a …

Jul 29, 2024 · When you want to fetch data associated with a particular value, you treat the dataset as a lookup table. There are two ways to define a lookup table: You can use the entire range of your …

A lookup table is a data structure used in computing to map input values to output values, facilitating faster data retrieval. By storing precomputed values, lookup tables can enhance the efficiency of …

A lookup table, also known as a translation table or mapping table, is a data structure that associates keys with values, enabling efficient retrieval of values based on matching keys.