Data Warehouse is a big central repository of historical data. This data is assembled from different departments and units of the company. Data Mart can be considered as a subset of data warehouse or simply a...

Encryption refers to the technique of keeping sensitive information confidential by changing the form of information. It is changed into an unreadable form in order to keep it secure. Obfuscation is quiet...

SDK or software development kit is a set of software development tools. These are primarily used to create various applications. API stands for Application Programming interface. It provides a specified...

Union and union all are commands used in SQL to integrate values from two tables. An evident difference between the two is that Union returns a distinct set of values, whereas Union all returns all the...

Outlook Express and Outlook are Microsoft’s email clients that fall under messaging products. Outlook Express is a client from Microsoft that was included with Windows XP and Windows 2000, whereas Outlook is a...