Answer:
Giá trị sử dụng của một vật phẩm là bao gồm các tính chất có ích, công dụng của vật thể đó có thể thoả mãn một nhu cầu nào đó cho việc sản xuất hoặc cho sự tiêu dùng cá nhân. Tính có ích của một vật làm cho vật đó trở thành một giá trị sử dụng.
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:Journalists often have to write on a deadline. What are two tips that you would give journalists to help meet deadlines?
Explanation:
Answer:
Unitary and Confederation
Explanation:
A Unitary system is defined as: "A system of political organization with a central supreme government which holds the authority over and makes the decisions for subordinate local governments"
- The central government holds authority over the local governments.
- It does not share power with the local governments and makes decisions for them.
A Confederation system is defined as: "A group of nations or states, or a government encompassing several states or political divisions, in which the component states retain considerable independence"
- This system focuses more on local or state governments.
- It is an independent system that, typically, doesn't share power with central government, at all.
