Explain the differences between the output of each command.
Try giving these two commands:
$ echo cat
$ cat echo
The first command causes echo to display the characters c, a, and t on the
screen. The second command uses cat to copy the contents of a file named
echo to the screen. If there is no file named echo, cat displays an error
message.
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Answer the following statement true (T) or false (F)
Case-Based Critical Thinking Questions Case 1: Frames Unlimited ? Frames Unlimited is a wholesale picture and poster frame business. Frame data are stored in sequential access files that contain four columns: item number, item name, size, and price. You need to create a report using the pictureFrame.txt sequential access file. The report provides a list of all picture frames with a size of 5×7. The report will be saved as another sequential access file named pictureFrame57.txt. Your first step is to ____.
A. declare a StreamWriter variable for the output file B. open the pictureFrame57.txt file for output using the CreateText method C. declare a StreamReader variable for the input file D. open the pictureFrame.txt file
A(n) _____ data type is created by a schema author for specific data values in an instance document.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. A view cannot provide restricted access to a relational database so it cannot be used for security purposes. 2. The database management system makes use of the database description tables to manage the physical database. 3. Two disadvantages to database encryption are key management and inflexibility. 4. Fixed server roles operate at the level of an individual database. 5. SQL Server allows users to create roles that can then be assigned access