When mapping a supertype/subtype relationship which of the following is true?
Options: The supertype primary key is assigned to each subtype., The subtype primary key is assigned to each supertype., There is no link between the supertype/subtype entities., There is no primary key/foreign key relationship between a supertype/subtype.
Options: the time required to complete one full cycle, the number of cycles completed in one second, the time required for the voltage to rise from 10% to 90% of the peak amplitude, equal to 0.707 times the peak amplitude
With respect to data input, the most accurate description of batch control is
Options: dividing documents to be entered into batches, controlling the input of each input clerk, comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system, All of the above
. If you need a text to show vertically in a cell. How will you achieve this?
Options: a. Choose Vertical on Text alignment in Format Cells dialog box b. Choose 90 Degrees in Orientation of Format Cells dialog box c. Choose Distributed from the Vertical drop down list of Format Cells dialog box d. Choose Center Across Selection from Horizontal combo box in Format Cells dialog box
Options: One or more conductors that serve as a common connection for a related group of devices, a continuous frequency capable of being modulated or impressed with a second signal, the condition when two or more sections attempt to use the same channel at the same time, a collection of interconnected functional units that provides a data communications service among stations attached to the network
Options: are more powerful then the first controllers on the market, are relatively low cost compared with the original digital equipment available for industrial control, can be cost effective even when replacing just a few relays, All of the above