What is a data model? Discuss the main types of data models.
What will be an ideal response?
An integrated collection of concepts for describing and manipulating data, relationships between data, and constraints on the data in an organization.
Object-based data models such as the Entity-Relationship model Record-
based data models such as the relational data model, network data model, and hierarchical datamodel Physical data models describe how data is stored in the computer
Computer Science & Information Technology
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When you export data from Access to Excel, the fields in Access become ________ in Excel
Fill in the blank(s) with correct word
Computer Science & Information Technology
A tree with a height of three must have
A) six nodes. B) one root and three nodes with two children each. C) three levels. D) three sub trees. E) None of the above
Computer Science & Information Technology