Examlex
Dependencies that are based on only a part of a composite primary key are called transitive dependencies.
Tectonic Activity
The movement and interaction of Earth's lithospheric plates, which can cause earthquakes, volcanic eruptions, and the formation of mountains.
Volcanic Activity
The process of magma rising to the Earth's surface, which can lead to eruptions, forming volcanoes and lava flows.
Impact Craters
Circular depressions on the surface of planets or moons formed by the collision with a meteorite, asteroid, or comet.
Large Canyons
Vast, deep ravines carved by river erosion or geological activity over millions of years.
Q1: Each row in a relation is called
Q3: A single-user database system automatically ensures _
Q11: A _ lock prevents the use of
Q19: The SQL command that modifies an attribute's
Q22: In order to develop an accurate data
Q38: _ are important because they help to
Q38: _ relationships can be implemented by creating
Q43: A null is created when you press
Q51: Although the DBMS is designed to recover
Q68: Composite primary keys are particularly useful as