The scope of SQL includes data query, data manipulation (insert, update and delete), data definition (schema creation and modification), and data access control. Although SQL is often described as, and to a great extent is, a declarative language , it also includes procedural elements. SQL was one of the first commercial languages for Edgar F. Codd's relational model, as described in his influential 1970 paper, A Relational Model of Data for Large Shared Data Banks.
uk â /ËkÉs.tÉªÅ/ us â /ËkÉË.stÉªÅ/. âº a calculation of the future cost of something such as a possible product: We'll need accurate costings before we can agree to fund the project.
Process Costing. Process costing is a method of allocating manufacturing cost to products to determine an average cost per unit. It is used by companies which mass produce identical or similar products. Since every unit is essentially the same, each unit receives the same manufacturing input as every other unit. Refineries, paper mills, and food processing companies are examples of businesses which use process costing.