the conflicts between design efficiency information requirements and performance are often resol

Name: the conflicts between design efficiency information requirements and performance are often resolved through compromises that include normalization conversion from 2nf to 3nf compromise 93293
Uploaded: 2023-10-30T17:23:06-08:00
Duration: 2 min 33 s
Channel: Akash M
Description: the conflicts between design efficiency information requirements and performance are often resolved through compromises that include normalization conversion from 2nf to 3nf compromise 93293

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The conflicts between design efficiency information...

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Question 15: Which of the statements about database normalization is true? Statements: i) Database normalization improves data redundancy, saves on storage space, and fulfills the requirement of records to be uniquely identified. ii) Database normalization supports up to 3rd normal form and removes all data anomalies. iii) Database normalization removes inconsistencies which may cause the analysis of our data to be more complicated. iv) Database normalization increases data redundancy, saves on storage space, and fulfills the requirement of records to be uniquely identified. Options: - (i), (ii) - (i), (iii) - (ii), (iv) - (iii), (iv)

Akash M.

hello-i-have-a-scenario-to-do-and-dont-know-how-to-begin-this-relates-to-microsoft-access-after-submitting-an-initial-design-to-the-daycare-team-they-ask-how-do-you-know-this-design-is-good-65705

After submitting an initial design to the Daycare Team, they ask, "how do you know this design is 'good'?" They ask about what process is used to reduce the potential of error in their database. In your response, explain normalization. Include the definition and goal of normalization, the requirements of 1NF, 2NF, and 3NF.

Akash M.

please-answer-all-3-8-50consider-the-following-normalized-relations-from-a-database-in-a-large-retail-chain-storestoreldregionmanagerldsquarefeet-employee-employeedwhereworkemployeenameemplo-85201

8-50. Consider the following normalized relations from a database in a large retail chain: STORE (StoreID, Region, ManagerID, SquareFeet) EMPLOYEE (EmployeeID, WhereWork, EmployeeName, EmployeeAddress) DEPARTMENT (DepartmentID, ManagerID, SalesGoal) SCHEDULE (DepartmentID, EmployeeID, Date) What opportunities might exist for denormalizing these relations when defining the physical records for this database? Under what circumstances would you consider creating such denormalized records? 8-51. Consider the following set of normalized relations from a database used by a mobile service provider to keep track of its users and advertiser customers. USER (UserID, UserLName, UserFName, UserEmail, UserYearOfBirth, UserCategoryID, UserZip) ADVERTISERCLIENT (ClientID, ClientName, ClientContractID, ClientZip) CONTACT (ContactID, ContactName, ContactEmail, ContactPhone) USERINTERESTAREA (UserID, InterestID, UserInterestIntensity) INTEREST (InterestID, InterestLabel) CATEGORY (CategoryID, CategoryName, CategoryPriority) ZIP (ZipCode, City, State) Assume that the mobile service provider has frequent need for the following information: • List of users stored by zip code • Access to a specific client with the client’s contact person’s name, email address, and phone number • List of users stored by interest area and within each interest area user’s estimated intensity of interest • List of users within a specific age range stored by their category and within the category by zip code • Access to a specific user based on their email address Based on these needs, specify the types of indexes you would recommend for this situation. Justify your decisions based on the list of information needs above. 8-52. Consider the relations in Problem and Exercise 8-51. Identify possible opportunities for denormalizing these relations as part of the physical design of the database. Which ones would you be most likely to implement?

Supreeta N.

Transcript

00:01 Here from the given question, the correct statement regarding the given database of the normalization, the first, the option 1 and 2 are correct.

00:20 About database normalization, the option 1 and 2 are correct.

00:44 For the statement we have, the one is true because database normalization improves data retentancy, saves on storage space and fulfills the requirement of the records to be uniquely identified.

01:20 And is one of the primary aims of normalization to reduce the retentancy and inconsistency in the data while establishing unique identification within the records...

Question

The conflicts between design efficiency, information requirements, and performance are often resolved through _____. compromises that include normalization conversion from 2NF to 3NF compromises that include denormalization conversion from 3NF to 4NF

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