Explanation:
Computer is an electronic device that is designed to work with information.
WORKING PRINCIPLE OF COMPUTER
a.It accepts data and instructions by way of input,
b.It stores data,
c.It can process data as required by the user,
d.It gives result in the form of output,
e.It controls all operations inside a computer.
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Answer:
-Consiste en conectar varias redes de computadoras basadas en diferentes protocolos -Requiere la definición de un protocolo de interconexión común sobre los protocolos locales. -El Protocolo de Internet (IP) desempeña este papel, definiendo direcciones únicas para una red y una máquina host.
Answer:
1) Yes, Publisher relation should have a publisherID primary key.
2) NOT NULL and UNIQUE for the BookID, BranchID, CardNumber and name of the borrower in the Book, Book_Copies, Library_branch, and Borrower relations respectively. The DueDate field of the book_loan relation must be a time constraint. The BookID of the Book relation must be serial number for automatic addition and update of bookid across the database.
Explanation:
The Publisher relation should have primary key publisherID which should replace the publisherName in the Book relation to easily make a join query and attain a third-level database model.
Answer:
estas son
Explanation:
El cáliz. Está formado por los sépalos, que son un conjunto de hojas verdes en la base de la flor.
La corola. Está formada por los pétalos que son hojas coloreadas en el interior de los sépalos.
Los estambres. Son los órganos masculinos de la flor. ...
El pistilo. Es el órgano femenino de la flor.
