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Which of the following is used in database information security to hide information?
Suggested Answer: B
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Polyinstantiation enables a relation to contain multiple tuples with the same primary keys with each instance distinguished by a security level. When this information is inserted into a database, lower-level subjects need to be restricted from this information. Instead of just restricting access, another set of data is created to fool the lower-level subjects into thinking that the information actually means something else.
Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002, chapter 11: Application and System Development (page 727).
31 comments · newest first
AL
Alonzo
10 months ago
Not sure about this, sounds too technical!
AL
Aleisha
10 months ago
Wait, is inheritance really not the answer?
WI
Wilford
10 months ago
Definitely B, it’s all about hiding data layers.
EA
Earleen
10 months ago
I thought it was polymorphism.
BE
Bea
11 months ago
Polyinstantiation is the right answer!
LA
Latrice
11 months ago
I definitely remember polyinstantiation being mentioned in the context of security, especially for sensitive data.
QU
Queenie
11 months ago
Inheritance sounds familiar, but I can't recall if it's about hiding data or something else entirely.
AN
Anabel
11 months ago
I remember practicing a question about polymorphism, but I don't think it relates to security.
PE
Percy
12 months ago
I think polyinstantiation is the one that deals with hiding information in databases, but I'm not completely sure.
DO
Dorsey
12 months ago
Okay, I've got this. Polyinstantiation is the technique used to create multiple versions of the same data object with different security classifications. That's the one that hides information in a database.
MY
Myra
12 months ago
I'm a bit confused on the difference between polymorphism and polyinstantiation. I'll need to review those concepts before answering this.
GR
Gregg
1 year ago
Polyinstantiation - that's the one that allows multiple instances of the same object with different security levels, right? I think that might be the answer here.
RO
Rodrigo
1 year ago
Hmm, this looks like a tricky one. I'll need to think carefully about the different database security concepts and which one is specifically used to hide information.
LE
Leandro
1 year ago
Wait, is this a trick question? Maybe they're testing if we know the difference between database design patterns and actual security measures. *chuckles*
SU
Sunshine
1 year ago
I believe it's B) Polyinstantiation because it allows multiple instances of the same data to exist.
WH
Whitney
1 year ago
I'm not sure, but I think C) Polymorphism could also be a possible answer.
CA
Cassie
1 year ago
Ah, I see what they're going for. B) Polyinstantiation is the way to go. Gotta love those database security tricks!
AN
Anisha
1 year ago
Database security is so important in today's digital world.
AS
Ashleigh
1 year ago
I always find it fascinating how technology evolves to keep our information safe.
LA
Lashawn
1 year ago
It's amazing how these techniques can hide information in databases.
KE
Keith
1 year ago
I agree, B) Polyinstantiation is definitely a key player in database security.
JE
Jess
1 year ago
I agree with Latonia, Polyinstantiation is used to hide information in database security.
TA
Tamar
1 year ago
D) Delegation? Really? That's more for sharing responsibilities, not hiding data. Come on, people!
JE
Jerilyn
1 year ago
B) Polyinstantiation is another technique used to hide information in database security.
AL
Aleisha
1 year ago
A) Inheritance is used to hide information in database security.
BR
Brock
1 year ago
Hmm, I'm not too sure about that. Polyinstantiation sounds more like a fancy database term than a security feature.
LE
Lea
1 year ago
I think B) Polyinstantiation is the correct answer to hide information in database security.
KA
Karma
1 year ago
I believe D) Delegation is also a valid option for hiding information in database security.
MI
Mitsue
1 year ago
I think it might be C) Polymorphism instead.
FR
Frederick
1 year ago
I agree, B) Polyinstantiation is used to hide information in database security.
LA
Latonia
1 year ago
I think the answer is B) Polyinstantiation.