Everything on the Internet is unquestionably protected by copyright law
Indicate whether the statement is true or false
FALSE
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Describe the relations that would be produced by the following tuple relational calculus expressions:
(a) {H.hotelName | Hotel(H) ? H.city = ‘London’} (b) {H.hotelName | Hotel(H) ? (?R) (Room(R) ? H.hotelNo ? R.hotelNo?? R.price ?50)} (c) {H.hotelName | Hotel(H) ? (?B) (?G) (Booking(B) ? Guest(G) ? H.hotelNo ? B.hotelNo?? B.guestNo = G.guestNo ?? G.guestName = ‘John Smith’)} (d) {H.hotelName, G.guestName, B1.dateFrom, B2.dateFrom | Hotel(H) ? Guest(G) ? Booking(B1) ? Booking(B2) ? H.hotelNo ? B1.hotelNo?? G.guestNo = B1.guestNo ?? B2.hotelNo = B1.hotelNo ? B2.guestNo = B1.guestNo ?? B2.dateFrom ? B1.dateFrom}
Which of the following is true concerning the options in the Join Properties dialog box?
A) The first two options are Inner Join type; the last one is an Outer Join type. B) The first two options are Outer Join type; the last one is an Inner Join type. C) The first option is an Outer Join type; the next two are Inner Join types. D) The first option is an Inner Join type; the next two are Outer Join types.
Comments always display the user name of the original author of the Excel workbook
Indicate whether the statement is true or false.
Answer the following statement(s) true (T) or false (F)
Computer investigations and forensics fall into the same category: public investigations.