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First available in 2004 as a compiler preview, Cω's features were subsequently used by Microsoft in the creation of the LINQ features released in 2007 in .NET version 3.5 [22] The concurrency constructs have also been released in a slightly modified form as a library, named Joins Concurrency Library, for C# and other .NET languages by ...
Quick Object's designer added support for adding multiple custom templates for code generation. V4.0 also added support for LINQ and enabled the capability to specify queries in LINQ and run them against any of the supported databases. On April 7, 2008, Version 3.5 was released with a new free edition of the product called Community Edition.
There are several different language structures that can be utilized with C# and LINQ and they are query expressions, lambda expressions, anonymous types, implicitly typed variables, extension methods, and object initializers. [98] LINQ has two syntaxes: query syntax and method syntax.
It is composed of two parts: Parallel LINQ (PLINQ) and Task Parallel Library (TPL). [2] [3] It also consists of a set of coordination data structures (CDS) – sets of data structures used to synchronize and co-ordinate the execution of concurrent tasks. [4]
The sort-merge join (also known as merge join) is a join algorithm and is used in the implementation of a relational database management system. The basic problem of a join algorithm is to find, for each distinct value of the join attribute, the set of tuples in each relation which display that value. The key idea of the sort-merge algorithm is ...
For example, think of A as Authors, and B as Books. An Author can write several Books, and a Book can be written by several Authors. In a relational database management system, such relationships are usually implemented by means of an associative table (also known as join table, junction table or cross-reference table), say, AB with two one-to-many relationships A → AB and B → AB.
In database theory, a join dependency is a constraint on the set of legal relations over a database scheme. A table T {\displaystyle T} is subject to a join dependency if T {\displaystyle T} can always be recreated by joining multiple tables each having a subset of the attributes of T {\displaystyle T} .
C#s Language Integrated Query (LINQ) is a set of features designed to work together to allow in-language querying abilities and is a distinguishing feature between C# and Java. LINQ consists of these features: Extension methods allow existing interfaces or classes to be extended with new methods.