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Exam 1z0-071 topic 1 question 57 discussion

Actual exam question from Oracle's 1z0-071
Question #: 57
Topic #: 1
[All 1z0-071 Questions]

Which three actions can you perform on an existing table containing data? (Choose three.)

  • A. Increase the width of a numeric column.
  • B. Add a new column as the table's first column.
  • C. Define a default value that is automatically inserted into a column containing nulls.
  • D. Change a DATE column containing data to a NUMBER data type.
  • E. Change the default value of a column.
  • F. Add a new NOT NULL column with a DEFAULT value.
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Suggested Answer: AEF 🗳️
by shotcom at April 26, 2023, 1:44 p.m.

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ArslanAltaf
7 months, 3 weeks ago
AEF is 100% correct.
upvoted 1 times
...
yaya32
1 year ago
Selected Answer: AEF
AEF for me
upvoted 2 times
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yanoolthecool
1 year, 1 month ago
Selected Answer: ADE
why not ADE? will E work? when we add a new column with default value, will it use that default value automatically for all the existing rows? im not sure, I know that it will do so for new ones though. as for D, shouldnt it be possible? as dates are stored as numeric value in the DB from what I know..
upvoted 1 times
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shotcom
1 year, 9 months ago
AEF B is wrong an additional column will appear at the end C is wrong default value will affect rows that will be inserted after creating default constraint
upvoted 4 times
...
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