A correlated subquery is a SQL query that depends on values executed by the outer query in order to complete.
A multidimensional database (MDB) is a type of database that is optimized for data warehouse and online analytical processing (OLAP) applications. Multidimensional databases are frequently created using input from existing relational databases.
The Oracle TimesTen In-Memory Database is an in-memory relational database in which all data is located in random access memory (RAM).
Pick is a data base management system (DMS) based on a business model of data and its organization and traditionally associated with minicomputer systems for small- to medium-size businesses.
A Virtual Private Database (VPD) makes the database tables seem like they belong to one user when multiple users may actually be using that table.