When the primary key of one relation is placed into a second relation, it is called a:
a. field key.
b. referential integrity.
c. foreign key.
d. candidate key.
e. relocated key?

we can all learn from our past mistakes because we all have different ways of learning different types of techniques. my way may or may not another classmate remember and have the repetition to acknowledge such standard. such as remembering acronyms. using abbreviations to us remember keep things in order in our memory. this us figure out what comes next in the sequence. if so, what we have is a sentence of just letters all in caps. we either know the meaning or have no idea what it stands for. most of the time we know the meaning and context. but most of us who don't know, should learn by having a quick glance at what needs to be remembered. such as repetition in the memory for acronyms. one way that me, is the fact that i'm always doing math and english assignments. so we have to remember specific meanings such as soapstone for documents, such as citing correctly. or pemdas for doing the equations correctly, even if it's the super long way. this works for everyone. you just have to find what works for you by practicing and repetition daily.

1. the 3d microscope captures more detail than a regular camera. they are similar because they are both taking pictures of something

2. photography allows us to see the world in more detail.

3. grains of sand on the earth is made up of cells and rocks. while sand on the moon in made up of lava flow and vaporizing meteorites.

4. i liked the bee because i could see it up close and seeing the detail of the bees eyes and little hairs on it were really cool.

explanation: