J meaning in Military and Defence ?

What is Join mean?

Join may refer to:

Join (law), to include additional counts or additional defendants on an indictmentIn mathematics:Join (mathematics), a least upper bound of sets orders in lattice theoryJoin (topology), an operation combining two topological spacesJoin (sigma algebra), a refinement of sigma algebrasJoin (algebraic geometry), a union of lines between two varietiesIn computing:Join (relational algebra), a binary operation on tuples corresponding to the relation join of SQLJoin (SQL), relational join, a binary operation on SQL and relational database tablesjoin (Unix), a Unix command similar to relational joinJoin-calculus, a process calculus developed at INRIA for the design of distributed programming languagesJoin-pattern, generalization of Join-calculusJoins (concurrency library), a concurrent computing API from Microsoft ResearchJoin Network Studio of NENU, a non-profit organization of Northeast Normal UniversityJoins.com, the website for South Korean newspaper JoongAng IlboJoining (woodworking), woodworking processes of combining two or more pieces of wood together, generally through the use of nails or screwsJoining (metalworking), metalworking processes which combines two or more pieces of metal together, typically by the use of screws or welding reference