Tony uses the Report Wizard to create a Biology research project report. He needs to select fields from two tables labeled "Organisms," which is the primary table, and "Mortality," which is the related table. Which of the following is true is this scenario??
A. ?He can select fields from these two tables only when both the tables are related.
B. ?He can select fields from only the primary "Organisms" table and not the related "Mortality" table.
C. ?He can select fields from only the related "Mortality" table and not the primary "Organisms" table.
D. ?He can only select the unique fields of these two tables that are present in the main form.
Answer: A
You might also like to view...
Calculate the remainder after q is divided by divisor, and assign the result to q. Write this statement in two different ways.
Write Java statements to accomplish each of the tasks:
Consider the following database schema. The attributes are ABCDEF. The FDs are:
ABF -> C CF -> B CD -> A BD -> AE C -> F B -> F (a) Compute the attribute closure of ABD with respect to the above set of FDs. Show all steps. (b) Compute the minimal cover of the above set of FDs. Show all steps. (c) Use the 3NF synthesis algorithm to construct a lossless, dependency preserving decomposition of the above schema. Show all steps. (d) Are all the schemas in the resulting decomposition in BCNF? If yes, then you are done. If there are schemas that are not in BCNF, decompose them further to achieve BCNF. Is the resulting decomposition dependency-preserving? Explain all steps: yes/no answers do not count. (a) What is a functional dependency? (b) Explain why a primary key constraint is an example of a functional dependency. (c) State the conditions (in terms of functional dependencies) for a relation to be in 3rd normal form and in BCNF. (d) Consider a relation in a library system with the following attributes: author (A), title (T), copy number (C), author's year of birth (B), shelf (Sh), subject (Sub). If the library has multiple copies of a particular book they are numbered consecutively with (unique) copy numbers. Shelf is the location of a particular book and all the books on a shelf are in the same subject category. What are the functional dependencies? Decompose the relation into two or more relations to eliminate redundant storage of information. In what normal form are the relations that result from your decomposition?
When the user opens a program or app, a(n) ________ displays
Fill in the blank(s) with correct word
Although a heap can be built in a dynamic tree structure, it is most often implemented in an array. This implementation is possible because ____.
A. the nodes in a heap are integers B. a heap is complete or nearly complete C. most programming languages provide support for heaps D. the elements in a heap are ordered