which rules apply to desigining table with less redundancy? a) Binary Relationship b) Reflective Relationship c) Weak entity d) Normal form
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which rules apply to desigining table with less redundancy?
a) Binary Relationship
b) Reflective Relationship
c) Weak entity
d) Normal form
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- Which statement is associated with two seperate entities. a) Attribute b) Entity Type c) Reflective Relationship d) RelationshipQuestion 1: a) Write a relation from a given digraph. b) Determine properties. c) Write in a matrix form. 文d) Both a and b 5. Suitable level of partitioning is found within the range of a) Tuple and attribute b) Tuple and relation c) Attribute and relation d) Tuple/Attribute and relation ible horiz
- 3) A relation is said to be in 3NF if it is in 2NF and no nonprime attribute of R is blank the primary key. A) an alternate forB) transitively dependent on C) Part of D) partially functionally dependent onE) fully funcionally dependent on1)A tuple is a named column of a relation. True or alse2)Each attribute in a relation has a distinct name. T/F3)The degree of a relation is the number of attributes it contains. T/F4)A foreign key is the candidate key that is selected to identify tuples. T/FIdentify the normal form it is in. Please make sure to provide explanations to support your answer. Convert it to BCNF. 1.GRADES (S#, C#, sem, year, F#, FName, Sname, Cname, grade, crHrs) a) Write down the following functional dependencies: S# --> C# --> F# --> b) Which normal form is the above relation in? c) Convert it to BCNF: 2.TEACHES (C#, sem, year, F#, Fname, Foffice) a) Write down the functional dependency for F#: F# --> b) Which normal form is the above relation in? c) Convert it to BCNF 3. R (a,b,c,d,e,f,g) Given that: d --> a e --> f,g a) Which normal form is the above relation in? b) Convert it to BCNF:
- What would be introduced as criteria of a table being in first normal form? a.) There should be no functional dependencies. b.) The primary key of the table should be composed of one column. c.) Each cell of a table should have a single value. d.) Every functional dependency where X is functionally dependent on Y, X should be the super key of the table.Material : Relational Algebra Course : Database Systems Create a Relational Algebra From Entity Relational Diagram (ERD) Below for:a) Displays books published in the last 5 years from 2020.b) Displays details of customers who have done shopping (using the Join operator)c) Displays email customers who have done shopping (using the Set operator)d) Displays the ISBN book that has never been purchased (using the Set operator)18. The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as primary key is called a. Referential relation b. Referencing relation c. Referenced relation d. Referred relation
- 3. a) A relation that does not have a composite primary key still has partial functional dependency. A) TRUE B) FALSE If you choose “False”, please explain below why it is “False. 3. b) For a table to be in 2NF, both of the following must be true: 1) this table that must be in 1NF and 2) this table must have no partial functional dependencies. TRUE FALSE If you choose “False”, please explain below why it is “False.” 3. c) A relation that is in 1NF must be in 3NF if the primary key consists of only one attribute. TRUE FALSE If you choose “False”, please explain below why it is “False.”2. In mathematical term Table is referred as a. Relation b. Attribute c. Tuple d. Domainconvert it to relations that are normalization