Algorithms that decompose into 3NF hold function dependencies and are lossless

An algorithm that is decomposed into a 3NF hold function-dependent and lossless connection:

1, according to decomposition of the 3NF retention function dependent decomposition algorithm (http://www.cnblogs.com/bewolf/p/4443919.html), to obtain the decomposition of the result ρ

2, determine whether the decomposition is a lossless connection, if the direct output of the result ρ

3, if 2 is lossy, then make ρ=ρu{x}, where X is the code of r, and then output ρ.

Algorithms that decompose into 3NF hold function dependencies and are lossless