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A~E: ① TCP ② IP ③ EDIFACT ④ HDLC ⑤ ARP
⑥ UDP ⑦ FTP ⑧ ICMP ⑨ SMTP ⑩ HTTP
试题12
The relational database model requires the data be __A__ through programs that dont rely on the position of the data in the database. This is in direct __B__ to the other database mode, where the program has to follow a series of pointers to the data it seeks. A program __C__ a relational database simply asks for the data it seeks; the DBMS performs the necessary searches and __D__ the information. The __E__ on how the search is done are specific to the DBMS and vary from product to product.供选择的答案
A:① accessed ② moved ③ read ④ wrote
B: ① conduct ② contract ③ contrast ④ construct
C: ① consulting ② containing ③ querying ④ queuing
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