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

Author Question: A weak entity is an entity that cannot exist in the database without (and is logically dependent ... (Read 293 times)

c0205847

  • Hero Member
  • *****
  • Posts: 531
on: Jul 7, 2018
A weak entity is an entity that cannot exist in the database without (and is logically dependent upon) another type of entity also existing in the database.
 
  Indicate whether the statement is true or false

Question 2

The INTERSECT of two relations A and B consists of all rows that are in relation B but are not in relation A.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kedrick2014

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 7, 2018
Answer to Question 1

TRUE

Answer to Question 2

FALSE


c0205847

  • Member
  • Posts: 531
Reply 2 on: Jul 7, 2018
Wow, this really help

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Physical assessment is one component of the nursing database Physical assessment is one component of the nursing database
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
Effect of pH on drug absorption: (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ... Effect of pH on drug absorption: (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ...
Proposed mechanism for the reaction catalyzed by flavin-dependent thymidylate synthase Proposed mechanism for the reaction catalyzed by flavin-dependent thymidylate synthase
Evaluate the following limits, if they exist - Pt 2 Evaluate the following limits, if they exist - Pt 2
Rho-dependent transcription termination Rho-dependent transcription termination
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

For a complete list of videos, visit our video library