You can create logical ties among various files only in the absence of foreign keys. a. true b. false

FALSE. It uses a series of logically related two-dimensional tables or files to store information in the form of a database.

Hope this helps, 

kwrob

Idon’t know, but i hate whoever it is. google it

I’d say platform as a service (paas) or application platform as a service (apaas) or platform base service is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.