The ________ data types in VBA are called integral data types
A) String and Boolean B) Currency and Decimal
C) Integer and Long D) Single and Double
C
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Which statements is false:
a. shared_ptrs provide the pointer operators dot(.), star(*) and arrow(->). b. We get the reference count using the shared_ptr member function use_count, which returns the number of shared_ptrs to the resource. c. Changes made to the resource of a shared_ptr are “seen” by all shared_ptrs to that resource. d. shared_ptr member function reset releases the current resource and sets the shared_ptr to NULL. If there are no other shared_ptrs to the resource, it’s destroyed.
Consider the LIBRARY relational schema shown in Figure 6.14, which is used to keep track of books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in Figure 6.14, as in the notation of Figure 3.7. Write down relational expressions for the following queries on the LIBRARY database:
(a) How many copies of the book titled The Lost Tribe are owned by the library branch whose name is "Sharpstown"? (b) How many copies of the book titled The Lost Tribe are owned by each library branch? (c) Retrieve the names of all borrowers who do not have any books checked out. (d) For each book that is loaned out from the "Sharpstown" branch and whose DueDate is today, retrieve the book title, the borrower's name, and the borrower's address. (e) For each library branch, retrieve the branch name and the total number of books loaned out from that branch. (f) Retrieve the names, addresses, and number of books checked out for all borrowers who have more than five books checked out. (g) For each book authored (or co-authored) by "Stephen King", retrieve the title and the number of copies owned by the library branch whose name is "Central".
What is one way the user can tell that new records cannot be created in a form?
A) The New command has a line through it. B) There is no way to tell that new records cannot be created. C) The New command is removed. D) The New command is grayed out.
Every time you use the ____ function, the file pointer moves to the next character in the file.
A. fgetc() B. fopen() C. fclose() D. fileread()