Indicate cardinality.
What will be an ideal response?
The objective is to create an ERD that will represent the M:N relationship between birds and tricks. To accomplish this, it is necessary to use an associative entity (BIRDTRICK) that contains data about a specific bird and a specific trick. With 50 birds and 20 tricks, this table might contain hundreds of records. The unique primary key will be the combination of a bird number and a trick number, as shown in the answer to Assignment 4. A second associative entity (CUSTOMER-REQUEST) also is shown. This entity is based on the assumption that one customer might place requests, and that any specific combination in BIRDTRICKcould be requested by more than one customer. The unique primary key for CUSTOMER-REQUEST would be the combination of the customer number, the trick requested, and the skill level needed.
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Why do many television ads list a phone number like 1-800 CALL ATT instead of as 1-800 225 5288? After all it’s easier to use the numbers on the touch pad instead of hunting up the letters. Relate this to short-term memory.
What will be an ideal response?
Unlike cabling, female RJ-45 jacks used in wall outlets do not have CAT ratings.
Answer the following statement true (T) or false (F)