aggregate function
11Lucas aggregate supply function — The Lucas aggregate supply function or Lucas surprise supply function, based on the Lucas imperfect information model, is a representation of aggregate supply based on the work of new classical economist Robert Lucas. The model states that… …
12Cobb–Douglas production function — A two input Cobb–Douglas production function In economics, the Cobb–Douglas f form of production functions is widely used to represent the relationship of an output to inputs. Similar functions were originally used by Knut Wicksell (1851–1926),… …
13Consumption function — In economics, the consumption function is a single mathematical function used to express consumer spending. It was developed by John Maynard Keynes and detailed most famously in his book The General Theory of Employment, Interest, and Money. The… …
14consumption function — ▪ economics in economics, the relationship between consumer spending and the various factors determining it. At the household or family level, these factors may include income, wealth, expectations about the level and riskiness of future… …
15Partition function (statistical mechanics) — For other uses, see Partition function (disambiguation). Partition function describe the statistical properties of a system in thermodynamic equilibrium. It is a function of temperature and other parameters, such as the volume enclosing a gas.… …
16Investment function — The investment function is a summary of the variables that influence the levels of aggregate investments. It can be formalized as follows:I=I(r,ΔY,q) + + where r is the real interest rate, Y the GDP and q is Tobin s q. The signs under the… …
17Null (SQL) — The Greek lowercase omega (ω) character is used to represent Null in database theory. Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the creator of the… …
18Join (SQL) — An SQL join clause combines records from two or more tables in a database.[1] It creates a set that can be saved as a table or used as is. A JOIN is a means for combining fields from two tables by using values common to each. ANSI standard SQL… …
19Select (SQL) — A SQL SELECT statement returns a result set of records from one or more tables. [cite web |url=http://msdn2.microsoft.com/en us/library/ms189499.aspx |title=Transact SQL Syntax Conventions |accessdate= |author=Microsoft ] [cite web… …
20ERROL — (an acronym for Entity Relationship Role Oriented Language) is a declarative database query and manipulation language for the Entity relationship model (ERM). It is applicable to any data model on which ERM can be mapped, virtually any general… …
