When working with a relational database, each record must have a(n) ________ key field, which has a value unique to that record
Fill in the blank(s) with correct word
primary
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Given the list elements and contents below. Which type of list collection could be used to represent them? Explain your choice.
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. Under MS-DOS, all interrupts originate with hardware. 2. Under MS-DOS, hardware responds to software-generated and hardware-generated interrupts differently. 3. Under MS-DOS, the operating system must be loaded into memory each time the computer is started up. 4. Under MS-DOS, the boot routine is stored on the third sector of each disk.
A system boots from the hard disk. To install Linux, you need it to boot from a DVD. How can you make the system boot from a DVD?
What will be an ideal response?
Irene is working on a database that stores customer data and order information. The Customer Information Table holds customer information. A unique customer number serves as the primary key for this table. The Order Information Table holds order information. A unique order number serves as the primary key for this table. A customer only has one customer number but may have several order numbers
If Irene wants to establish a one-to-many relationship between the customer information table and the order information table, which of the following steps should she follow? A) Irene should include the foreign key in the customer information table as a primary key in the order information table. B) Irene should include the primary key in the customer information table as a foreign key in the order information table. C) Irene cannot establish a relationship between the two tables. D) Irene should include the primary key in the customer information table as a primary key in the order information table.