ArtifactTransferException: Failure to transfer ...

If you get this error message starting with this you can trace the failing jar or dependency file on local folder below.This path is a generic one for hibernate

C:\Users\user1\.m2\repository\org\hibernate\hibernate-core

Remove folder or back up just in case you need.Update project via eclipse with m2eclipse

Sign-Magnitude

Sign-Magnitude Representation
There are many schemes for representing negative integers with patterns of bits
One scheme is sign-magnitude.
It uses one bit (usually the leftmost) to indicate the sign. "0" indicates a positive integer, and "1" indicates a negative integer.
The rest of the bits are used for the magnitude of the number.
So -2410 is represented as:

1001 1000

The sign "1" means negative
The magnitude is 24 (in 7-bit binary)

http://chortle.ccsu.edu/AssemblyTutorial/Chapter-08/ass08_12.html

BigInteger

BigInteger, What Are They?

(From sun.com) "Immutable arbitrary-precision integers."
should be used whenever you need to handle very large numbers, anything larger then 'long' variables. Long's have a max a max value of 9223372036854775807. As well, BigInteger provides some useful functions

for bit manipulation, GCD, random number, and primality testing and generation.
http://compsci.ca/v3/viewtopic.php?t=13193

Multitenancy

• Multitenancy

Multitenancy refers to a principle in software architecture where a single instance of the software runs on a server,
serving multiple client organizations (tenants). Multitenancy is contrasted with a multi-instance architecture where separate software instances (or hardware systems) are set up for different client organizations.
With a multitenant architecture, a software application is designed to virtually partition its data and configuration, and each client organization works with a customized virtual application instance.