In Word, the term, ____________________, refers to returning the formatting to the Normal style.
Fill in the blank(s) with the appropriate word(s).
clear formatting
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Provide the equivalent domain relational calculus and relational algebra expressions for each of the tuple relational calculus expressions given in Exercise 4.10.
(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}
In a(n) ____________________ database, tables can be related to each other and you can use that feature to make data management more efficient.
Fill in the blank(s) with the appropriate word(s).
When you use the redirect output symbol (>) on a command line, the shell creates the output file immediately, before the command is executed. Dem- onstrate that this is true.
$ ls aaa ls: aaa: No such file or directory $ ls xxxxx > aaa ls: xxxxx: No such file or directory $ ls aaa aaa
RAM, ROM, PROM, EPROM, EEPROM, and flash memory are all examples of __________ memory types.
Fill in the blank(s) with the appropriate word(s).