<span>Unmatched query can be used in a situation where we need to relate two table that do not have a common field to compare to. For example consider a table consist of list of products and their code as Pname and PID. the second table consist of Code and Cost of that product. If we want to find the cost of a product, unmatched query can be used.</span>
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On single and double overhead cam engines, the cams are driven by the crankshaft, via either a belt or chain called the timing belt or timing chain. These belts and chains need to be replaced or adjusted at regular intervals.
Answer: <u>Charles Jenkins</u> was the founder of tele and radio.
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