This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: EXISTS and NOT EXISTS are actually just another form of correlated subqueries. Indicate whether ... (Read 30 times)

mmm

  • Hero Member
  • *****
  • Posts: 558
on: Jul 7, 2018
EXISTS and NOT EXISTS are actually just another form of correlated subqueries.
 
  Indicate whether the statement is true or false

Question 2

Which of the following is not true about a relation?
 
  A) Has rows containing data about an entity
  B) Has columns containing data about attributes of the entity
  C) Has cells that hold only a single value
  D) Can have two identical rows


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mjbamaung

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 7, 2018
Answer to Question 1

TRUE

Answer to Question 2

D


mmm

  • Member
  • Posts: 558
Reply 2 on: Jul 7, 2018
Gracias!

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
CMS-1500 form showing linkage of CPT and diagnosis codes. CMS-1500 form showing linkage of CPT and diagnosis codes.
Thick-walled barrel-shaped arthrospores on thin glass like hyphae; the room-temperature form of ... Thick-walled barrel-shaped arthrospores on thin glass like hyphae; the room-temperature form of ...
How to graph quadratic equations that are in vertex form How to graph quadratic equations that are in vertex form
How to write a quadratic equation in standard form when a graph is given How to write a quadratic equation in standard form when a graph is given
6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ... 6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ...
Video: Uterine (menstrual) cycle - phases

For a complete list of videos, visit our video library