Functions like SUM or AVERAGE aggregate an entire set of data
Indicate whether the statement is true or false
TRUE
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List all guests currently staying at the Grosvenor Hotel.
What will be an ideal response?
Which statement is false:
a. A weak_ptr points to the resource managed by a shared_ptr without assuming any responsibility for it. b. The reference count for a shared_ptr doesn’t increase when a weak_ptr references it. That means that the resource of a shared_ptr can be deleted while there are still weak_ptrs pointing to it. When the last shared_ptr is destroyed, the resource is deleted and any remaining weak_ptrs are set to NULL. c. One use for weak_ptr s is to avoid memory leaks caused by circular references. d. None of the above.
Compute the circumference of a circle with a 2-foot radius.
What will be an ideal response?
?Identify the letters of the choices that best match the phrases or definitions.
A. ?A widely used method of visualizing and documenting software systems design B. ?A technique used by analysts to define relationships in more detail, after drawing an initial entity-relationship diagram C. ?A field in one table that must match a primary key value in another table in order to establish the relationship between the two tables D. ?Could help a consumer products firm identify potential customers based on their prior purchases E. ?A set of rules that avoids data inconsistency and quality problems F. ?Defines only those portions of the database that a particular system or user needs or is allowed to access G. ?A coding method used on mainframe computers and high-capacity servers H. ?A person, place, thing, or event for which data is collected and maintained I. ?A set of field values that describes a single person, place, thing, or event J. ?A kind of storage that refers to data that a user can view, regardless of how or where the information actually is organized or stored