The Operations That Transform a Physical Database into a Logical

Q39: A table is defined with a specific

Q40: Rules for writing XML include<br>A) element names

Q41: The _ operation combines two tables .

Q42: An XML file is an alternative notation

Q43: The key field for a database of

Q45: Database _ allow us to ask questions

Q46: The database scheme (or schema)<br>A) specifies, for

Q47: Select all that apply . Which of

Q48: XML tags cannot contain<br>A) numbers<br>B) uppercase letters<br>C)

Q49: A(n) _ is a correspondence between two