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trusted connections
Integrated security requires network protocols that support authenticated connections between clients and servers. These are referred to as trusted connections. The multi-protocol and named pipe protocols provide trusted connections.
twip
A screen-independent unit used to ensure that placement and proportion of screen elements in your screen application are the same on all display systems. A twip is a unit of screen measurement equal to 1/20 of a printer's point. There are approximately 1440 twips to a logical inch or 567 twips to a logical centimeter (the length of a screen item measuring one inch or one centimeter when printed).
two-phase commit
Allows an application to coordinate updates among multiple SQL servers. This implementation of distributed transactions treats transactions on separate SQL servers as a single transaction. The service uses one SQL server, the commit server, as a record keeper that helps the application determine whether to commit or to roll back transactions. Thus, the two-phase commit guarantees that either all the databases on the participating servers are updated or that none of them are.
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two's complement
A type of base-2 notation used to represent positive and negative in which negative values are formed by complementing all bits and adding 1 to the result. Complementing is done by changing all 1s to 0, and all 0s to 1.
type-declaration character
A character appended to a variable name indicating the variable's data type. By default, variables are of type Variant unless a corresponding Def
type statement is present in the module.
type library
A file or component within another file that contains standard descriptions of exposed objects, properties, and methods that are available for Automation. Object library files (.olb) contain type libraries.
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UDP
User Datagram Protocol. A standard Internet transport layer protocol that is connectionless, which adds a level of reliability and multiplexing to IP.
unattended execution
Where no user interaction is required.
Unicode
International Standards Organization (ISO) character standard. Unicode uses a 16-bit (2-byte) coding scheme that allows for 65,536 distinct character spaces. Unicode includes representations for punctuation marks, mathematical symbols, and dingbats, with substantial room for future expansion.
union query
An SQL-specific select query that creates a snapshot-type Recordset object containing data from all specified records in two or more tables with any duplicate records removed. To include the duplicates, add the keyword ALL.
For instance, a union query of the Customers table and the Suppliers table results in a snapshot-type Recordset that contains all suppliers that are also customers.