Anyone who interacts with today's modern databases needs to know SQL (Structured Query Language), the standard language for generating, manipulating, and retrieving database information. In recent years, the dramatic rise in the popularity of relational databases and multi-user databases has fueled a healthy demand for...

This self-contained introduction discusses the evolution of the notion of coherent states, from the early works of Schr?dinger to the most recent advances, including signal analysis. An integrated and modern approach to the utility of coherent states in many different branches of physics, it strikes a balance between mathematical and physical...

With the increasing focus on IT Security comes a higher demand for identity management in the modern business. This requires a flexible, scalable, and secure authentication method. Identity control is made mandatory by many public standards, such as PCI, and PKI is an essential component to set up authentication in many technologies,...