Definitions for "Conceptual schema"
a complete logical view of the database that contains a description of all the data and relationships in the database
an organization of data where each datum is defined only once for the organization, and it relationship to all other data are clearly and uniquely defined as well
a single integrated definition of the enterprise data that is unbiased toward any single application and independent of its access and physical storage
a static, time-invariant collection of linguistic or graphical representations that describe the structure of the data of interest