4th millennium BC. The 4th millennium BC spans the years 4000 through 3000 BC. Some of the major changes in human culture during this time included the beginning of the Bronze Age and the invention of writing, which played a major role in starting recorded history.
Plone is a powerful and flexible, enterprise-quality content management system that is easy for developers to download and install, and easy for end-users to use. Plone lets non-technical people create and maintain website content using only a web browser.
PLM or Product Life cycle Management is a process or system used to manage the data and design process associated with the life of a product from its conception and envisioning through its manufacture, to its retirement and disposal.