In most DBMSs, you can only have one clustered index per table, though there are systems that support multiple clusters (DB2 being an example). Like a regular index that is stored unsorted in a database table, a clustered index can be a composite index, such as a concatenation of first name and last name in a table of personal information. Share this:
Best Answer: Four laps equals one mile on the track. (1600) Two laps is a half mile. (800m) The track is divided into four 100m parts for it to equal one lap. Therefore, 400m equals one lap. Also, usually on a high school track, there are 6 lanes. I hope I didn't confuse you.
Note that there are 3600 seconds in 1 hour and 5280feet in 1 mile.Write the quantity that is to be converted as a fraction. 850 miles850 miles per hour = 1 hour Now, multiply by a ratio containing mile units in the denominator and feetunits in the numerator so that the mile units cancel.