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Page "Prolog" ¶ 4
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Some Related Sentences

If and negated
If the negated query can be refuted, it follows that the query, with the appropriate variable bindings in place, is a logical consequence of the program.
If the party had any momentum to build upon, it was negated by a weak campaign in the 2007 provincial election which again saw Gerrard and Lamoureux re-elected but the party's popular support decline to just above 12 % and fewer second place finishes than they had in 1999.
# If a predicate P is derived from a negated predicate Q ( i. e., P is the head of a rule, and Q occurs negatively in the body of the same rule ), then the stratification number of P must be greater than the stratification number of Q, in short.
If either binomial involves subtraction, the corresponding terms must be negated.
If enhanced phytolith production results in a reduced availability of biomass for other GHG mitigation strategies, its effectiveness for lowering net GHG emissions may be reduced or negated.

If and query
If these relations are stored physically as separate disk files, completing a database query that draws information from several relations ( a join operation ) can be slow.
If we wanted to retrieve all of the Orders for Customer 1234567890, we could query the database to return every row in the Order table with < u > Customer ID </ u > 1234567890 and join the Order table to the Order Line table based on < u > Order No </ u >.
If we want to retrieve every Invoice for a particular Order, we can query for all orders where < u > Order No </ u > in the Order relation equals the < u > Order No </ u > in OrderInvoice, and where < u > Invoice No </ u > in OrderInvoice equals the < u > Invoice No </ u > in Invoice.
If the DHT function cannot find a peer which is in charge of the advertisement then the query will be forwarded up and down the RPV list until a match is found, the query is aborted, or it reaches the limits of the RPV list.
The Editorial Policy states inter alia: " If you think you've been unfairly edited, or that we've wrongly refused to publish your comments, please feel free to query our decision by posting a comment.
If an exact match is found, this match is used to seed a possible un-gapped alignment between the query and database sequences.
If a node wants to find a resource on the network, which may be on a node it does not know about, it could simply broadcast its search query to its immediate neighbours.
If the neighbours do not have the resource, it then asks its neighbours to forward the query to their neighbours in turn.
If the answer is too large to fit into a single UDP packet, the packet will be marked as " overflown " and the UA is free to send the query directly to the SA using TCP, which can transmit packets of any size.
( If the resolver is specifically told to look for CNAME records, the canonical name ( right-hand side ) is returned, rather than restarting the query.
If a DNS resolver sends a query without EDNS, or with EDNS version 0, then a name server synthesizes a CNAME record to simulate the semantics of the DNAME record.
If routing information is found, a response is sent to the " query " containing the information necessary to properly route the call.
If it is not a local number, the call is passed on to the STP and routed until it gets to a local carrier who will perform the " query " mentioned earlier and route the call accordingly.
If the form is processed on the server by a CGI script, the script may typically receive the query string as an environment variable named.
If the requested URL corresponds to a file and not to a program, the whole query string is ignored.
# If the user arrives at the same web server by two ( or more ) independent paths, it will be assigned two different query strings, while the stored cookies are the same.
If located in the home network, it can query the HSS with the Diameter Sh or Si interfaces ( for a SIP-AS ).
If more than one aircraft turned on their Obioe, the ground stations would start to receive several return pulses for every query, with no way to distinguish between them.
* If a dimension is very sparse ( i. e. most of the possible values for the dimension have no data ) and / or a dimension has a very long list of attributes which may be used in a query, the dimension table may occupy a significant proportion of the database and snowflaking may be appropriate.

If and can
If any of us miss, they can pick up the pieces.
`` If you can conveniently let me have twenty dollars '', he wrote one friend in 1791 when he was Secretary of the Treasury.
If we cannot stop warfare in our own economic system, how can we expect to abolish it internationally??
If our sincerity is granted, and it is granted, the discrepancy can only be explained by the fact that we have come to believe hearsay and legend about ourselves in preference to an understanding gained by earnest self-examination.
If Mrs. Wright doesn't accept the terms in the morning, I'll go either to Tokyo or to Holland, to do what I can.
If within one year you can make a success out of the American, you can practically name your own salary thereafter.
If it is not one of his best books, it can only be considered unsatisfactory when compared with his own Garibaldi.
If there be a disinterested patriot in America, 'tis General Washington, and his bravery, none can question ''.
`` If you can firmly make the good knight sure to pleasure our Corporation '', Sturley wrote, `` besides that ordinary allowance for your diet you shall have 20 for recompence ''.
If man is actually the product of his environment and if science can discover the laws of human nature and the ways in which environment determines what people do, then someone -- a someone probably standing outside traditional systems of values -- can turn around and develop completely efficient means for controlling people.
If the manner of his passing moves the nations to act in the spirit of his dedication the sore issues that plague the world can yet be resolved with reason and justice.
If they do as well as they did in 1960 there can be no complaint.
If he can bounce back with one of those 25 home runs years, the club will have to be better off offensively.
If it will simply delay the debates until the qualifications are closed next spring, and then carry all the candidates on a tour of debates, it can provide a service to the state.
`` If the day should ever come that foreign invaders swarm ashore along the Gulf Coast '', the account reads, `` they can count on heavy opposition from a group of commando-trained telephone employees -- all girls.
If we cluster together, the redcoats can make an advantage out of it, but there's not a blessed thing they can do with two or three of us except chase us, and we can outrun them ''.
If there is anything which we can do in the executive branch of the Government to speed up the processes by which we come to decisions on matters on which we must act promptly, that in itself would be a major contribution to the conduct of our affairs.
If the target can change its position significantly during the 30 minutes the missile is in the air on its way, the probability of the missile destroying the target is drastically reduced.
If your state has no provisions for the numbering of pleasure boats, you must apply for a number from the U.S. Coast Guard for any kind of boat with mechanical propulsion rated at more than 10 horsepower before it can be used on Federal waterways.
If there are any major restrictions, they usually can be obtained in printed form.
Note: If 1/2-inch panel board is used inside and out, or 5/8-inch one side and 3/8-inch the other, and 1/8-inch glass is used, stock lumber in Af, Af, and Af can be used in making the glass panels.

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