E-text <span>is digital textual information that can be stored, manipulated, and transmitted by electronic devices. The term "e-text" stands for electronic text and it is used for any digital document written, read, transmitted or manipulated by electronic devices, such as smart phones, PCs, tablets,...The origins of the e-text are in the beginning of the Internet.</span>
There are some function which can be performed with database but not with a spread sheet, these functions include: 1. Enforcement of data type. 2. Support for self documentation. 3. Defining the relationship among constraints in order to ensure consistency of data.
