RelationalDBDesign
RelationalDBDesign
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Normalization - Quiz
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1st, 2nd, 3rd NF
Joins, User Views
Permissions Design Role
SQL Joining Tables
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Disadvantages Horizontal Partitioning
Disadvantages Vertical Partitioning
Horizontal Partition
Database Vertical Partitioning
DB Design Mistakes
Business Objects Rules
Common Mistakes
Primary Foreign Key Mistakes
Vertically Partitioning Table - Quiz
Each question is worth one point. Select the best answer or answers for each question.
1.
Vertically partitioning a table creates what change to the table?
Please select the best answer.
A.
The table's rows are stored in two or more smaller tables.
B.
The table's columns are stored in two or more smaller tables, linked by the original table's primary key fields.
C.
The table's columns are combined with columns from another table.
D.
The table's rows are combined with rows from another table.
2.
Horizontally partitioning a table can result in what performance trade-offs?
Please select all the correct answers.
A.
Finding records in more than one partition is faster than if the records were in a single, larger table.
B.
Finding records in more than one partition is slower than if the records were in a single, larger table.
C.
Finding records in a single partition is faster than if the records were in a single, larger table.
D.
Finding records in a single partition is slower than if the records were in a single, larger table.
3.
Vertically partitioning a table slows down what operations?
Please select all the correct answers.
A.
Joins based on frequently joined fields
B.
Inserting new records
C.
Searching complete records
D.
Deleting records