- aggregate query
- агрегатный запрос
English-Russian SQL Server dictionary. 2013.
English-Russian SQL Server dictionary. 2013.
Conjunctive query — In database theory, a conjunctive query is a restricted form of first order queries. A large part of queries issued on relational databases can be written as conjunctive queries, and large parts of other first order queries can be written as… … Wikipedia
Language Integrated Query — LINQ redirects here. For the card game, see Linq (card game). Language Integrated Query Influenced by SQL, Haskell Language Integrated Query (LINQ, pronounced link ) is a Microsoft .NET Framework component that adds native data querying… … Wikipedia
Online aggregation — Almost all database operations are performed in batch mode, i.e. the user issues a query and waits till the database has finished processing the entire query. On the contrary, using online aggregation, the user gets estimates of an aggregate… … Wikipedia
Null (SQL) — The Greek lowercase omega (ω) character is used to represent Null in database theory. Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the creator of the… … Wikipedia
Domain-driven design — (DDD) is an approach to developing software for complex needs by deeply connecting the implementation to an evolving model of the core business concepts.[1] The premise of domain driven design is the following: Placing the project s primary focus … Wikipedia
Join (SQL) — An SQL join clause combines records from two or more tables in a database.[1] It creates a set that can be saved as a table or used as is. A JOIN is a means for combining fields from two tables by using values common to each. ANSI standard SQL… … Wikipedia
Gadfly (database) — Gadfly is a relational database management system written in Python. Gadfly is a collection of Python modules that provides relational database functionality entirely implemented in Python. It supports a subset of the standard RDBMS Structured… … Wikipedia
ERROL — (an acronym for Entity Relationship Role Oriented Language) is a declarative database query and manipulation language for the Entity relationship model (ERM). It is applicable to any data model on which ERM can be mapped, virtually any general… … Wikipedia
Select (SQL) — A SQL SELECT statement returns a result set of records from one or more tables. [cite web |url=http://msdn2.microsoft.com/en us/library/ms189499.aspx |title=Transact SQL Syntax Conventions |accessdate= |author=Microsoft ] [cite web… … Wikipedia
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