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Bess [88]
3 years ago
10

Using the notation exemplified in following question , list a set of tables and attributes (and identify keys) to represent the

following data:
In a very simple school database, students have a student ID and a name. Each student has only one advisor (who has an ID and a name). Each advisor advises many students. Students take many courses. Each course has an ID, a name, and the number of credits. The database also stores when a student took a course (the semester/year) and his/her final grade for that course (on that semester).

Computers and Technology
1 answer:
Paha777 [63]3 years ago
6 0

Answer:

Entities are - Students, CourseList, Advisor and CourseSelection.

Explanation:

The database is structure is designed using Crow Foot Database Notation as attached

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Write a Java method to delete a record from a B-tree of order n.
max2010maxim [7]

Answer:

Deleting a record on a B-tree consists of three main events:

- Searching the node where the key to be deleted exists

- Deleting the key

- Balancing the tree if required

Explanation:

q = NULL;

   p = tree;

   while (p) {

       i = nodesearch(p, key);

       q = p;

       if (i < used(p) -1 && key == k(p,i)) {

           found = TRUE;

           position = i;

           break;

       }

       p = son(p,i);

   }

   if (!found)

   else if (subtree(p)) {

         if (used(p) > ((n-1)/2)+1)

         delkey (p, position, key);

       else {

           replace (p, position, fsucc(p));

           p0 r1 p1 r2 p2 r3 ……. pn-1 rn-1 pn

           q = &fsucc(p);

           qpos = index of fsucc;

           if (used(rbrother(p)) > ((n-1)/2)+1)

               replace (q, qpos, sonsucc(q));

           else

               while (q && used(q) < (n-1)/2) {

                   concatenate(q, brother(q));

                   q = father(q);

               }

       }

   }

   else

   delkey(p, position, key);

}

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3 years ago
What is the recommended size for bulleted text? 12–22 24–40 44–66 54–80
algol [13]
44–66

According to sources, the most probable answer to this query is 44–66 point size.
This is because the eyes and the illustration should match the proportion of distance and height factors.
Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
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jeka57 [31]

Answer:

AI, Interests, and marketing

Explanation:

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Greeley [361]

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Explanation:

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