Which of the following chart types is used to show data that changes over time?
A. Pie chart
B. Line chart
C. Bar chart
D. Column chart
Answer: B
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XML Schema divides its user-derived data types into two classes: primitive and derived.
Answer the following statement true (T) or false (F)
What typically happens when a file system’s mount point contains directories of the native file system?
a) The contents of the mounted file system and the native file system are merged, with the mounted file system’s contents taking precedence in the case of any duplicate directory or file names. b) The contents of the mounted file system and the native file system are merged, with the native file system’s contents taking precedence in the case of any duplicate directory or file names. c) The contents of the native file system’s directory at the mount point are temporarily hidden. d) The contents of the native file system’s directory at the mount point are deleted.
Show that, if the matrix S resulting from Algorithm 15.3 does not have a row that is all "a" symbols, then projecting S on the decomposition and joining it back will always produce at least one spurious tuple.
What will be an ideal response?
Which of the following is NOT an example of metadata?
A. keywords B. length of document C. author D. description of content