T

Table:

Table is the term used to describe the primary structural and data storage container in a relational database. A table is the definition of data, or the metadata. Tables are divided into fields and records. Fields impose structure and data type specifics onto each of the field values in a record.

Tag:

See Element .

Tertiary Index:

See Alternate Index .

Text:

In XML, text items are the values between the start and end tags.

The Web:

See Internet and Browser .

Throughput:

A term often applied to data warehouses, as a measure of how much data a database can process in a given period of time.

Timestamp:

A data type used to store date values, with a time of day attached as well.

Token:

A term used to describe a word object. For example, elements or attributes in an XML document are sometimes described as tokens. Also, syntactical elements in programming and scripting languages are known as tokens.

Transaction:

A transaction in SQL is a sequence of one or more commands where changes are not as yet committed permanently to a database. A transaction is completed once changes are committed or undone (rolled back). See Transactional Control .

Transaction Control:

A transaction comprises one or more database change commands, which make database changes. A transaction is completed on the execution of a COMMIT or ROLLBACK command, manually or automatically. The concept of transactional control is that SQL allows sets of commands to be permanently stored all at once, or undone all at once. See Transaction .

Transactional Control:

See Transaction Control .

Transactional Data:

Data about the day-to-day dynamic activities of a company, such as invoices.

Transformation:

A process of changing something from one thing into another. XSL can be used to transform XML data into something visually appealing in a browser. XSL does this beautification process by adding HTML commands in with the XML data.

Truncate:

The term truncate implies removing characters from a value, typically a number, where no rounding occurs. Truncation is colloquially known as chopping off.

Tuning:

See Performance Tuning .

Tuple:

See Record .