In this module, you were introduced to the following terms:
- Database: A collection of data within defined parameters (a data model) that makes the data elements predictable.
- Hierarchical database: Database based on top-down relationships among data elements. Hierarchical databases are used for core business applications such as payroll and accounts receivable.
- Relational database: Database based on the metaphor of a basic table with rows and columns. Data elements stored in these tables share a relationship defined by a common element called a key.
- Middleware: Software that functions as a translator to enable one application to communicate with another that either runs on a different platform or comes from a different vendor.
- ODBC: Open Database Connectivity (ODBC) is a database access protocol based on the Windows NT platform.
- SQL: Structured Query Language (SQL) is a standardized database language that lets you access data in relational database management systems by describing the data you want to see.
In the following module, you will learn about the different media available on Web sites and the formats associated with each.