单选

建立数据库系统的主要目标是减少数据的冗余,提高数据的独立性,并集中检查(57)。

  • A.数据操作性
  • B.数据完整性
  • C.数据兼容性
  • D.数据可维护性
参考答案
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ASCII is a 7-bit code used to represent numeric, alphabetic, and special printable characters. It also includes codes for control characters, which are(75).

  • A.printable or displayable
  • B.not printable or displayable
  • C.not printable but displayable
  • D.printable but not displayable

By means of multiple pipeline to carry out multiple processing, this technology is called(71).

  • A.Multiple pipeling
  • B.Superpipeline
  • C.Superscalar
  • D.Very long instruction word

An instruction that uses indrect addressing mustt contain an address of memory where(69).

  • A.data is stored
  • B.a pipeline stall will be executed
  • C.a page fault is addressed
  • D.another address is stored

The sorting method described by the code is called(67).

  • A.Insertion sort
  • B.Selection sort
  • C.Radix sort
  • D.Merge sort
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