In computer science, a lookup table is a data structure, usually an array or ociative array, used to replace a runtime computation with a simpler lookup operation.In computer science, a lookup table is a data structure, usually an array or ociative array, often used to replace a runtime computation with a simpler array HTML Codes html characters, html symbols, html enies and conversion tablesExcel Lookup Table. Using a Lookup Table in Excel. Excel's VLookup Function. See Also: Fixed Rate Lookup || Excel VLOOKUP || Calculate Sliding Scale Tax || Left An array or matrix of data that contains items that are searched. Lookup tables may be arranged as keyvalue pairs, where the keys are the data items being searched PRODUCTSEARCH TABLE Tarazi Design Studio Produced in 2007 The table "Search Table" was created by using the first few hundreds of images that were hit when the word Search Table. The Search Table window provides a quick way or building a simple search on a table. It can be invoked in one of the following ways:A table is used to store elements. An element may be inserted in the table, searched for (looked up) in the table, and sometimes deleted from the table.