Bryan has e-mailed his boss, shauna, asking if he can leave work early next friday. which choice best describes bryan in this communication scenario? 1. the sender of the message 2. the receiver of the message 3. a barrier to the message 4. a source of the message

Representa os dados de um banco de dados como uma coleç? o de tabelas constituídas por um conjunto de atributos, que definem as propriedades ou características relevantes da entidade que representam. marque a alternativa que representa o modelo descrito no enunciado. escolha uma:

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.

In excel, what happens to the cell contents when you click and drag a cell into multiple cells?