If the problem is important enough, the Performance Analyzer tool will inform you of required changes that must be made to your database.
Answer the following statement true (T) or false (F)
False
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The list sequence container does not:
a. Efficiently implement insert and delete operations anywhere in the list. b. Use a doubly linked list. c. Support bidirectional iterators. d. Automatically sort inserted items.
You have been given the task of ‘selling’ formal specification techniques to a software development organization. Outline how you would go about explaining the advantages of formal specifications to sceptical, practising software engineers.
What will be an ideal response?
Suppose the file is not ordered by the non-key field DEPARTMENTCODE and we want to construct a secondary index on SSN using Option 3 of Section 18.1.3, with an extra level of indirection that stores record pointers. Assume there are 1000 distinct values of DEPARTMENTCODE, and that the EMPLOYEE records are evenly distributed among these values. Calculate (i) the index blocking factor bfr i (which is also the index fan-out fo); (ii) the number of blocks needed by the level of indirection that stores record pointers; (iii) the number of first-level index entries and the number of first-level index blocks; (iv) the number of levels needed if we make it a multi-level index; (v) the total number of blocks required by the multi-level index and the blocks used in the extra level of indirection; an
Consider a disk with block size B=512 bytes. A block pointer is P=6 bytes long, and a record pointer is P R =7 bytes long. A file has r=30,000 EMPLOYEE records of fixed-length. Each record has the following fields: NAME (30 bytes), SSN (9 bytes), DEPARTMENTCODE (9 bytes), ADDRESS (40 bytes), PHONE (9 bytes), BIRTHDATE (8 bytes), SEX (1 byte), JOBCODE (4 bytes), SALARY (4 bytes, real number). An additional byte is used as a deletion marker.
People often take action for their own personal reasons, such as finding it enjoyable, feeling like they are contributing to something bigger than themselves, or gaining a sense of accomplishment. This can be characterized as ________ motivation
Fill in the blank(s) with correct word