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horsena [70]
3 years ago
5

a rule that states each foreign key value must match a primary key value in the other relation is called the

Computers and Technology
1 answer:
makvit [3.9K]3 years ago
3 0

Answer:

Referencial Integrity Contraint

Explanation:

The referential integrity constraint states that the customer ID i.e (CustID) in the Order table must match a valid CustID in the Customer table. Most relational databases have declarative referential integrity. That is to say, when the tables are created the referential integrity constraints are set up so as to maintain the quality of information.

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A contiguous subsequence of a list S is a subsequence made up of consecutive elements of S. For example, if S is 5,15,-30,10,-5,
Sindrei [870]

Answer:

We made use of the dynamic programming method to solve a linear-time algorithm which is given below in the explanation section.

Explanation:

Solution

(1) By making use of the  dynamic programming, we can solve the problem in linear time.

Now,

We consider a linear number of sub-problems, each of which can be solved using previously solved sub-problems in constant time, this giving a running time of O(n)

Let G[t] represent the sum of a maximum sum contiguous sub-sequence ending exactly at index t

Thus, given that:

G[t+1] = max{G[t] + A[t+1] ,A[t+1] } (for all   1<=t<= n-1)

Then,

G[0] = A[0].

Using the above recurrence relation, we can compute the sum of the optimal sub sequence for array A, which would just be the maximum over G[i] for 0 <= i<= n-1.

However, we are required to output the starting and ending indices of an optimal sub-sequence, we would use another array V where V[i] would store the starting index for a maximum sum contiguous sub sequence ending at index i.

Now the algorithm would be:

Create arrays G and V each of size n.

G[0] = A[0];

V[0] = 0;

max = G[0];

max_start = 0, max_end = 0;

For i going from 1 to n-1:

// We know that G[i] = max { G[i-1] + A[i], A[i] .

If ( G[i-1] > 0)

G[i] = G[i-1] + A[i];

V[i] = V[i-1];

Else

G[i] = A[i];

V[i] = i;

If ( G[i] > max)

max_start = V[i];

max_end = i;

max = G[i];

EndFor.

Output max_start and max_end.

The above algorithm takes O(n) time .

4 0
3 years ago
"In about 100 words, describe the idea behind software as a service (SaaS). In your answer, include at least three examples of e
Mama L [17]

Answer:

Explanation:

Saas refers to software as a service and can also be called software on demand .

It Isa software that is deployed over the internet rather than requiring to install an application .It offers different devices such as pay as you go , subscription model and service on demand model .

Only a compatible browser is needed to access the software .

Electronic packages or components that aree offered as an Saas

1)Shopify

2)Big commerce

3)Slack

3 0
3 years ago
You can easily view the ruler on a document by selecting the Show Ruler button located _____.
Ket [755]
In the “View” tab in the Ribbon.
7 0
3 years ago
Read 2 more answers
Which of these monitor connector types is the oldest and least desirable to use?
ella [17]

Answer:

DVI is the oldest out of the four.

Explanation:

DVI and VGA are the oldest, but DVI is oldest and least desirable to use since it is outdated.

5 0
3 years ago
Read 2 more answers
Which statement is FALSE? If a method does not return a value, the return-value-type in the method declaration can be omitted. P
Tcecarenko [31]

Answer:

If a method does not return a value, the return-value-type in the method declaration can be omitted.

Explanation:

If a method does not return a value, the return-value-type in the method declaration can be omitted is a false statement.

8 0
3 years ago
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