Join may refer to: *

Join (law) In law, a joinder is the joining of two or more legal issues together. Procedurally, a joinder allows multiple issues to be heard in one hearing or trial and occurs if the issues or parties involved overlap sufficiently to make the process more e ...

, to include additional counts or additional defendants on an indictment *In mathematics: **

Join (mathematics) In mathematics, specifically order theory, the join of a subset S of a partially ordered set P is the supremum (least upper bound) of S, denoted \bigvee S, and similarly, the meet of S is the infimum (greatest lower bound), denoted \bigwedge S. I ...

, a least upper bound of sets orders in lattice theory **

Join (topology) In topology, a field of mathematics, the join of two topological spaces A and B, often denoted by A\ast B or A\star B, is a topological space formed by taking the disjoint union of the two spaces, and attaching line segments joining every point in ...

, an operation combining two topological spaces **

Join (sigma algebra) Join may refer to: * Join (law), to include additional counts or additional defendants on an indictment *In mathematics: ** Join (mathematics), a least upper bound of sets orders in lattice theory ** Join (topology), an operation combining two topo ...

, a refinement of sigma algebras **

Join (algebraic geometry) In algebraic geometry, given irreducible subvarieties ''V'', ''W'' of a projective space P''n'', the ruled join of ''V'' and ''W'' is the union of all lines from ''V'' to ''W'' in P2''n''+1, where ''V'', ''W'' are embedded into P2''n''+1 so that th ...

, a union of lines between two varieties *In computing: **

Join (relational algebra) In database theory, relational algebra is a theory that uses algebraic structures with a well-founded semantics for modeling data, and defining queries on it. The theory was introduced by Edgar F. Codd. The main application of relational algebr ...

, a binary operation on tuples corresponding to the relation join of SQL ***

Join (SQL) A join clause in SQL – corresponding to a join operation in relational algebra – combines columns from one or more tables into a new table. Informally, a join stitches two tables and puts on the same row records with matching fields : INNER, ...

, relational join, a binary operation on SQL and relational database tables ***

join (Unix) join is a command in Unix and Unix-like operating systems that merges the lines of two sorted text files based on the presence of a common field. It is similar to the join operator used in relational databases but operating on text files. Overvie ...

, a Unix command similar to relational join **

Join-calculus The join-calculus is a process calculus developed at INRIA. The join-calculus was developed to provide a formal basis for the design of distributed programming languages, and therefore intentionally avoids communications constructs found in other ...

, a process calculus developed at INRIA for the design of distributed programming languages ***

Join-pattern Join-patterns provides a way to write concurrent, parallel and distributed computer programs by message passing. Compared to the use of threads and locks, this is a high level programming model using communication constructs model to abstract t ...

, generalization of Join-calculus ***

Joins (concurrency library) Joins is an asynchronous concurrent computing API (Join-pattern) from Microsoft Research for the .NET Framework. It is based on join calculus and makes the concurrency constructs of the Cω language available as a CLI assembly that any CLI compl ...

, a concurrent computing API from Microsoft Research *

Join Network Studio of NENU Join Network Studio() of Northeast Normal University China is affiliated with Student Career Service Center of NENU. This is a non-profit organization composed by some undergraduate students. All departments except Software Department of the studi ...

, a non-profit organization of Northeast Normal University *

Joins.com ''The JoongAng'', formally known as ''JoongAng Ilbo'', is a South Korean daily newspaper published in Seoul, South Korea. It is one of the three biggest newspapers in South Korea, and a newspaper of record for South Korea. The paper also publ ...

, the website for South Korean newspaper ''JoongAng Ilbo'' *

Joining (woodworking) Join may refer to: * Join (law), to include additional counts or additional defendants on an indictment *In mathematics: ** Join (mathematics), a least upper bound of sets orders in lattice theory ** Join (topology), an operation combining two topo ...

, woodworking processes of combining two or more pieces of wood together, generally through the use of nails or screws *

Joining (metalworking) Metalworking is the process of shaping and reshaping metals to create useful objects, parts, assemblies, and large scale structures. As a term it covers a wide and diverse range of processes, skills, and tools for producing objects on every scale ...

, metalworking processes which combine two or more pieces of metal together, typically by the use of screws or welding

See also