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4.4.1.0.1 Example
Suppose we have a Lua library that implements the access of databases contained in a specific DBMS. This library has three types of objects: databases, queries and records. In COM world, this could be represented by an Application object that opens databases and returns a Database Object. A Database object has, among others, a Query method. This method receives a SQL statement and returns a Query object. The Query object is a collection, which can be iterated using the parameterized property Records, which returns an object of type Record.
Fabio Mascarenhas de Queiroz 2005-01-07