The rules for producing XML encodings of information produce hierarchical descriptions that can be thought of as trees .
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Q13: Every relational database can be described by
Q14: A table is defined with a specific
Q15: An XML file is an alternative notation
Q16: A database table may not contain multiple
Q17: A database table is technically called a
Q19: The key field for a database of
Q20: What operation combines two tables based on
Q21: What operation takes rows from one table
Q22: The Select operation on tables is often
Q23: Assume that you use the Product operation
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