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Helen [10]
3 years ago
6

If you have a field that needs a unique number that's one greater than the last field entry, what field type would you typically

use?
A. AutoNumber
B. Number
C. Yes/No
D. Text
Computers and Technology
1 answer:
Alik [6]3 years ago
4 0
AutoNumber it can do it all alone and put the number(If you don’t know the number to put).
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Answer:

You can use JavaScript, HTML, PHP and so forth.

Explanation:

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3 years ago
Determine whether or not the following pairs of predicates are unifiable. If they are, give the most-general unifier and show th
Evgen [1.6K]

Answer:

a) P(B,A,B), P(x,y,z)

=> P(B,A,B) , P(B,A,B}  

Hence, most general unifier = {x/B , y/A , z/B }.

b. P(x,x), Q(A,A)  

No mgu exists for this expression as any substitution will not make P(x,x), Q(A, A) equal as one function is of P and the other is of Q.

c. Older(Father(y),y), Older(Father(x),John)

Thus , mgu ={ y/x , x/John }.

d) Q(G(y,z),G(z,y)), Q(G(x,x),G(A,B))

=> Q(G(x,x),G(x,x)), Q(G(x,x),G(A,B))  

This is not unifiable as x cannot be bound for both A and B.

e) P(f(x), x, g(x)), P(f(y), A, z)    

=> P(f(A), A, g(A)), P(f(A), A, g(A))  

Thus , mgu = {x/y, z/y , y/A }.

Explanation:  

Unification: Any substitution that makes two expressions equal is called a unifier.  

a) P(B,A,B), P(x,y,z)  

Use { x/B}  

=> P(B,A,B) , P(B,y,z)  

Now use {y/A}  

=> P(B,A,B) , P(B,A,z)  

Now, use {z/B}  

=> P(B,A,B) , P(B,A,B}  

Hence, most general unifier = {x/B , y/A , z/B }  

b. P(x,x), Q(A,A)  

No mgu exists for this expression as any substitution will not make P(x,x), Q(A, A) equal as one function is of P and the other is of Q  

c. Older(Father(y),y), Older(Father(x),John)  

Use {y/x}  

=> Older(Father(x),x), Older(Father(x),John)  

Now use { x/John }  

=> Older(Father(John), John), Older(Father(John), John)  

Thus , mgu ={ y/x , x/John }  

d) Q(G(y,z),G(z,y)), Q(G(x,x),G(A,B))  

Use { y/x }  

=> Q(G(x,z),G(z,x)), Q(G(x,x),G(A,B))

Use {z/x}  

=> Q(G(x,x),G(x,x)), Q(G(x,x),G(A,B))  

This is not unifiable as x cannot be bound for both A and B  

e) P(f(x), x, g(x)), P(f(y), A, z)  

Use {x/y}  

=> P(f(y), y, g(y)), P(f(y), A, z)  

Now use {z/g(y)}  

P(f(y), y, g(y)), P(f(y), A, g(y))  

Now use {y/A}  

=> P(f(A), A, g(A)), P(f(A), A, g(A))  

Thus , mgu = {x/y, z/y , y/A }.

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3 years ago
Which of the following is true about STEM education? STEM education is focused on understanding rather than applying scientific
Soloha48 [4]

Answer:

C). STEM students are encouraged to blend and expand their knowledge of all four subject areas.

Explanation:

STEM education is characterized as a learning and development approach that focuses upon an amalgamation of four subject areas including science(S), technology(T), engineering(E), and Mathematics(M). Thus, each letter stands for a subject domain and this integration of four subjects primarily aims to 'blend and expand the knowledge of the students in these areas' integratively. It helps in developing and sustaining the interests of young learners through this integrated approach which also assists them with unique opportunities. Thus, <u>option C</u> is the correct answer.

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3 years ago
You recently purchased a new laptop for home. You want to ensure that you are safe from malware. You should install a personal _
german

Answer:

You should install a personal firewall, a program that protects your computer from unauthorized access by blocking certain types of communications.

Explanation:

In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet.

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3 years ago
My cell phone rear camera is dirty does anyone know how to clean it?
Vesna [10]
If you have glasses the liquid and cloth can be used to clean it. You spray the camera, then use the cloth to wipe it up. If you don't have them the dollar store should have some, or even places like Walmart and Maceys.
5 0
3 years ago
Read 2 more answers
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