I vote A for the answer to your question. Hope this helps!
Answer:
Hi!
The correct answer is B.
Explanation:
This sentence SELECT * FROM customers JOIN orders ON (customer#) selects all the columns of both customers and orders and joins by the name of the column customer.
A and B options have syntactic problems:
- A and C: Same alias name for multiple tables.
- A and C: Selected columns are ambiguous.
- C: refers to an alias not declared on the FROM sentence.
a) SELECT c.customer#, order#, orderdate, shipdate(omits aliases) FROM customers c NATURAL JOIN orders c(same aliases definiton);
c) SELECT c.customer#, order#, orderdate, shipdate(omits aliases) FROM customers c, orders c(same aliases definiton) WHERE c.customer# = o.customer#(o not declared);
A stock market, equity market or share market is the aggregation of buyers and sellers of stocks, which represent ownership claims on businesses; these may include securities listed on a public stock exchange, as well as stock that is only traded privately
Well im going to say that it is going to be more advanced and easier to hack. Not only that but more and more people are going to be using it. You'll see ten year olds and five year olds using computers like they are professionals
~Hello there!
Your question: Why is CPU called the brain of the computer?
Your answer: CPU is called the brain of computer because the CPU carries all the important calculations that helps the computer to process.
Any queries?
Happy Studying ^=^