.. (לתיקייה המכילה) | ||
In question 4, what does it mean "two following transactions"? according to which field should they be following? | |
According to the date. given the following 3 transactions: 1: 15/09/2012 2: 24/09/2012 3: 28/09/2012 1 & 2 are following transactions, 2 & 3 are also following transactions, but 1 & 3 are not |
In question 2c, Can our solution permit the existence of a product which is neither an ice cream nor a yogurt? | |
Yes |
In question 3a. What do you mean by "return all the workers"? | |
Return the worker_id of the relevant workers. |
In question 4, what happens if we have few deals on the same date? | |
For example what should we return for 1: 15/9/2013 2: 15/9/2013 3: 28/9/2013 4: 28/9/2013 You should return 1&3, 1&4, 2&3 and 2&4. |
In question 1, If an attribute was removed from a table, does it mean all the table rows don't fit the scheme and should be deleted? | |
No, if you can just remove the attribute and the record can stay in the DB, it should stay in the DB (just as values are added to additional attributes if needed). |