transaction variables - traducción al ruso

IN TEMPORAL DATABASES, THE POINT IN TIME AT WHICH A DATABASE FACT WAS STORED IN THE DATABASE

Transaction Time; Transaction-time

transaction variables

переменные, характеризующие сделки

commercial transaction

AGREEMENT, OR COMMUNICATION, CARRIED OUT BETWEEN A BUYER AND A SELLER TO EXCHANGE AN ASSET FOR PAYMENT

Payment transactions; Bank transactions; Payment transfer; Financial transactions; Commercial Transaction; Commercial transaction; Cash transactions

коммерческая сделка

transaction cost

COST INCURRED IN MAKING AN ECONOMIC EXCHANGE

Transaction costs; Transactions costs; Transaction cost economics; Transaction Cost Economics; Entry cost; Transactions cost; Transaction-cost economics; Transaction (economics); Transactional cost; Transactional costs

трансакционные издержки (на совершение сделки)

Definición

free variable

1. A variable referred to in a function, which is not an argument of the function. In lambda-calculus, x is a {bound variable} in the term M = x . T, and a free variable of T. We say x is bound in M and free in T. If T contains a subterm x . U then x is rebound in this term. This nested, inner binding of x is said to "shadow" the outer binding. Occurrences of x in U are free occurrences of the new x. Variables bound at the top level of a program are technically free variables within the terms to which they are bound but are often treated specially because they can be compiled as fixed addresses. Similarly, an identifier bound to a recursive function is also technically a free variable within its own body but is treated specially. A closed term is one containing no free variables. See also closure, lambda lifting, scope. 2. In logic, a variable which is not quantified (see quantifier).

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Wikipedia

Transaction time

In temporal databases, transaction time (TT) is the time during which a fact stored in the database is considered to be true. As of December 2011, ISO/IEC 9075, Database Language SQL:2011 Part 2: SQL/Foundation included clauses in table definitions to define "system-versioned tables" (that is, transaction-time tables).

In a database table transaction interval is often represented as an interval allowing the system to "remove" entries by using two table-columns StartTT and EndTT. The time interval is closed at its lower bound and open at its upper bound.

When the ending transaction time is unknown, it may be considered as "Until Changed". Academic researchers and some RDBMS have represented "Until Changed" with the largest timestamp supported or the keyword "forever". This convention is not technically precise.

The term was coined by Richard T. Snodgrass and his doctoral student Ilsoo Ahn.

https://en.wikipedia.org/wiki/Transaction time