ALTER TABLE customer ADD CONSTRAINT customer_number_unique UNIQUE (customer_number);
- Tab ( Complete omitted commands and parameters )
- Space bar ( Display the next screen )
- Up arrow ( Scroll backward through previously entered commands )
- ? ( Provides context-sensitive help )
- Ctrl Shift 6 ( Cancel commands such as trace and ping).
What is CLI tools ?
A command line interface (CLI) is a text-based user interface (UI) used to run programs, manage computer files, and interact with a computer. A command line interface is also known as a command line user interface, console user interface, or character user interface.
Why do we use CLI tools ?
The CLI is a command line utility that accepts text input and executes operating system functions. In the 1960s, this was the only way to interact with a computer, as only computer terminals were in use. In the 1970s and 1980s, command line input was widely used on Unix systems and personal computer systems such as MS-DOS and Apple DOS.
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Answer:
2^10 = 1024 addresses
Explanation:
Each bit can be either 1 or 0, and this holds true for all 10 bits. So for every bit, we choose either a 0 or a 1 (2 choices), and then do so for the remaining bits. So we have 2 * 2 * 2 * ... * 2 (10 2's) choices for all 10 bits
