Trade had a great impact on Sumerian society. Traders traveled to faraway places and exchanged grain for gold, silver, copper, lumber, and precious stones.
To enforce referential integrity, the database can return an error instead of doing the requested action or do the requested action and do the related changes to the related tables
Thus the answer is either a or b.
Explanation:
When the given data base in a table is valid and if it is consistent then it is called as referential integrity and it also refers to the consistency within the relationship. This type of database is much important because it will keep us introducing to the errors in the databases and it also checks if the reference from one table is equal to the other table.
The main function is to prevent the users from entering the wrong and inconsistent data. So in referential integrity the database will return the error instead of doing the required action or it can do the related changes to the related tables.
Answer:
B) More time may be spent on using technology than on learning.
C) Social media and technology can change the way students think.
D) Technology can make it difficult to create interpersonal connections.
Explanation:
I just answered them correctly on edge 2020!
I believe the answer is: <span>Sampling frame.
</span><span>Sampling frame refers to the list of subjects that made up the sample population within a research.
</span>In Goody's research, the registrar;s list could be considered a sampling frame because all of his research subjects are taken from the name on that list.
