By default the first field in a table created using the Blank database command is designated as the primary key field.

Setting your undo levels to 100 will decrease your computer's RAM devoted to this task

Indicate whether the statement is true or false

Write a recursive SQL query that returns tuples of the form
From,To,Distance, which represent direct or indirect ?ights (i.e., ?ights composed of one or more segments) and the aggregate distance over all segments for each such ?ight. (If there are several ways to reach B from A and the total distance is di?erent in each case, then the output would have several tuples such as
A,B,1000,

A,B,1500, etc.) The exact query is: Find al l tuples of the above form provided that the distance is less than 10,000 . Consider the following relational schema:

DirectFlight(From,To,Distance)