Answer:
A alternativa correta é a letra e. <u>Integridade referencial.</u>
Explanation:
A definição da integridade referencial está relacionado as chaves estrangeiras, isto é, a chave estrangeira corresponde ao valor em uma tabela destino, que deve ser a chave primária de registros na tabela origem.
Ou seja, se relaciona a informação de dados íntegros e referenciados.
Quando há a sincronização dos dados da tabela destino e da tabela origem, haverá a manutenção da relação entre as linhas e as colunas da tabela.
Incomplete questions. Here is part of the complete questions:
- What is NOT a major river valley in Asia (Tigris-Euphrates, Nile, Indus, Huang He)?
- What is the caste system?
- What important African trading center became a famous center for learning and culture?
Answer:
<u>1. the Nile</u>
<u>2. strict social structure of India</u>
<u>3. Timbuktu</u>
Explanation:
1. We can rightly make this conclusion because even though the Nile is a major river, it is actually located in the continent of Africa, (specifically northeastern Africa).
2. Indeed, the caste system was introduced in. This system requires a strict social structure, in which individuals in the society are ranked by their status etc.
3. The African country of Timbuktu had a major role in African trade, it became a center for African trading. It also contributed to learning and culture.
Answer:
Você esqueceu de dar as alternativas para a questão poder ser repondida corretamente.
You forgot to put the alternatives of the question. By this reason your question could not be answer properly. Always remember to write the whole question.
Explanation:
Improve— because the better you improve the better it is to compare your options
