SARA Home Help Log In Here! /.nav-collapse Add Filter/Sort Difficulty: Easy Medium Hard Comments: Sort By: Time (Descending) Time (Ascending) Rating (Descending) Rating (Ascending) Position (Ascending) Position (Descending) Filter User: All Difficulty: All Easy Medium Hard Rating: Use XML to describe the metadata for a table of information, and classify the uses of the tags as identification, affinity, or collection Explain the differences between everyday tables and database tables Explain how the concepts of entities and attributes are used to design a database table Use the six database operations: Select, Project, Union, Difference, Product, and Join Describe the differences between physical and logical databases Express a query using Query By Example 471 Computers are usele...