DavinxiBlanchard

At the same time the Earth orbits around the sun it also spins. Earths Rotation you are correct. Earth Rotation And Revolution Texas Gateway However similar to mercury its slow rotation and speed make a single solar day the time the sun requires getting to the same position in the sky which lasts around 117 days. . Earth rotates counter-clockwise and Venus rotates clockwise. Still another difference between the planet Earth and the planet Venus is that Venus does not have any moons that revolve around the planet. Venus probably does not have water and Earth has water. The planet rotates counterclockwise opposite Earth and most other planets and does so exceedingly slow - one day on Venus equals 243 Earth days. Earth orbits the sun once a year and rotates on its axis once a day. The Earth is as precious as every life on Earth is. Venus rotates very slowly on its axis one day on Venus lasts 243 Earth days. S...

From the given keys key which doesnt contain. So it is not a superkey. Pin On Primary Primary key field can have a character value. . Most tables in a database may not require primary keys. The PRIMARY KEY NOT NULL and CHECK are the constraints that specify rules for data insertion. Multiple Choice The data values of a primary key must be different ie unique. D Primary keys are used to represent relationships. A primary key is which of the following. A candidate key is a minimal superkey. Consider the following REA model as you answer the next question. E Primary keys can be defined using an SQL CONSTRAINT phrase. When the foreign key refers to a tuple which does not exists in subjected relation then the constraint violated is The operation which violates only one constraint called referential integrity when it is performed is called. X A primary cannot be used in another table as a foreig...