What is the difference between covering and overlapping constraints use in DBMS?

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What is the difference between covering and overlapping constraints use in DBMS?

What is the difference between covering and overlapping constraints use in DBMS?

Answer:

In reference with below Employee Entity Relational Model Overlap Constraints : Can "Karthik"...

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dgcharitha at Database Administrators Mark as irrelevant Undo

Other solutions

Why does Google support two OSs with such overlapping use cases, roles?

Chrome OS, Android. Does it make sense to have two parallel / overlapping developments?  Presumably both are some *nix siblings so there would be a lot of commonality?   I am particularly asking becaiuse the use cases seem to converge (collide).   While...

Answer:

You could conceivably converge the middle layers of the system - the portable parts of the OS kernel...

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Simon Kinahan at Quora Mark as irrelevant Undo

Answer:

In a disjointness design constraint, an entity can belong to not more than one lower-level entity set...

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community wiki at wiki.answers.com Mark as irrelevant Undo

Difference b/w inner join and outer join in DBMS?

Wat is the difference b/w inner join and outer join in DBMS?

Answer:

I usually go with w3schools. http://w3schools.com/sql/sql_join.asp

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Should we continue to use fluoride?

Fluoride exposure disrupts the synthesis of collagen and leads to the breakdown of collagen in bone, tendon, muscle, skin, cartilage, lungs, kidney and trachea. Fluoride stimulates granule formation and oxygen consumption in white blood cells, but inhibits...

Answer:

An excellent elucidation of the dangers of fluoride, for which I thank you. The answer to your question...

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Keith Taylor at Quora Mark as irrelevant Undo

Is there a difference between how the Christians use the word “Christ” and the way Muslims use it?

Is there a difference between how the Christians use the word “Christ” to refer to Jesus of Nazareth and the way that Muslims use the word “Christ” to refer to Jesus of Nazareth? If so, what is that difference? Thank You

Answer:

Hi. not sure how the Muslims use the word "Christ" to refer to Jesus. But to answer your question...

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LeonidasHart at Answerbag.com Mark as irrelevant Undo

What is the difference between defining keys and constraints in database theory?

i mean the major difference between the defining the primary, foreign keys and constraints...

Answer:

A constraint is a predetermined limitation on a column in a table. Example: you can add a constraint...

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yashwanth k at Yahoo! Answers Mark as irrelevant Undo

What's the difference between "society" and "culture"?

What's the difference between "society" and "culture"? Being in a field related to anthropology, I talk/write/read about "culture" constantly but rarely use/come across the word "society." I've been reading some...

Answer:

Well, you might already realize a lot of people make their living teaching undergrads these sort of...

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What is the difference between Database and DBMS?

What are some examples of database and DBMS?

Answer:

Very well answered by Thomas Tydal.

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Josep Lluis Larriba Pey at Quora Mark as irrelevant Undo

What's the difference between "the same one as ~ " and "the same one that ~ " in practical use?

what's the difference between "the same one as ~ " and "the same one that ~ " in practical use? I'm not a native speaker. Is there any difference among the expressions? If there ever is, is it a difference that must be obeyed or that...

Answer:

They are different. It is not a negligible error because it won't make sense if you use the wrong one...

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