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5) The bottom level of a multi-level index is a. a) Sorted single level. b) Unsorted single-level c) Primary and clustering. d) Bottom-level block index.

5) The bottom level of a multi-level index is a. a) Sorted single level. b) Unsorted single-level c) Primary and clustering. d) Bottom-level block index.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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A A Sele A = === Paragraph Styles Editir 5) The bottom level of a multi-level index is a a) Sorted single level. b) Unsorted single-level c) Primary and clustering d) Bottom-level block. index. 6) What is the fan-out for a multi-level index where index entries are 32 bytes and index blocks are 10 kilobytes? a) Approximately 400 b) Approximately 500 c) Approximately 300 d) Approximately 200 7) How are blocks read with a single-level index? a) A scan reads all index bocks to find table blocks that contain selected rows. The table blocks are them read. b) A scan is initiated to read all table blocks. Index blocks are then read. c) The search reads one index block plus selected table blocks. d) A scan is initiated to read all table blocks that contains index blocks with selected data. 8) Branches that are similar in length in an index hierarchy are a) Dense. b) Balanced. c) Sparse. d) Primary. DFocus F10 ※一 * F11 F12 PrtSc Insert FS F6 F7 F8 F9 & 7 %3D T. Y U
Transcribed Image Text:A A Sele A = === Paragraph Styles Editir 5) The bottom level of a multi-level index is a a) Sorted single level. b) Unsorted single-level c) Primary and clustering d) Bottom-level block. index. 6) What is the fan-out for a multi-level index where index entries are 32 bytes and index blocks are 10 kilobytes? a) Approximately 400 b) Approximately 500 c) Approximately 300 d) Approximately 200 7) How are blocks read with a single-level index? a) A scan reads all index bocks to find table blocks that contain selected rows. The table blocks are them read. b) A scan is initiated to read all table blocks. Index blocks are then read. c) The search reads one index block plus selected table blocks. d) A scan is initiated to read all table blocks that contains index blocks with selected data. 8) Branches that are similar in length in an index hierarchy are a) Dense. b) Balanced. c) Sparse. d) Primary. DFocus F10 ※一 * F11 F12 PrtSc Insert FS F6 F7 F8 F9 & 7 %3D T. Y U
A Aa- A E PFind - AaBbCcDx AaBbCcDx AaBbC AaBbCcC AaB 1 Normal 1 No Spac. Heading 1 Heading 2 Replace Title A Select - Paragraph Styles Editing 1) When working with multi- tables, a column that is available in all interleaved tables is known as? a) Hash function b) Bucket c) Cluster d) Sort column 2) Which table type interleaves rows of two or more tables in the same storage area? a) Heap Tables b) Table clusters c) Hash tables d) Sorted tables. 3) A_index is an index on a non-unique sort of column a) Sorted b) Secondary c) Primary d) Clustering 4) When is a table updated and the index block has no free space for a new index ends what happens? a) An error results. b) A new block is merged. c) The entry is removed. d) The block splits. DFocus Insert ※一 **12 PriSc F7 F8 F10 F11 & * 4 5 6. 8 9. R T. Y.
Transcribed Image Text:A Aa- A E PFind - AaBbCcDx AaBbCcDx AaBbC AaBbCcC AaB 1 Normal 1 No Spac. Heading 1 Heading 2 Replace Title A Select - Paragraph Styles Editing 1) When working with multi- tables, a column that is available in all interleaved tables is known as? a) Hash function b) Bucket c) Cluster d) Sort column 2) Which table type interleaves rows of two or more tables in the same storage area? a) Heap Tables b) Table clusters c) Hash tables d) Sorted tables. 3) A_index is an index on a non-unique sort of column a) Sorted b) Secondary c) Primary d) Clustering 4) When is a table updated and the index block has no free space for a new index ends what happens? a) An error results. b) A new block is merged. c) The entry is removed. d) The block splits. DFocus Insert ※一 **12 PriSc F7 F8 F10 F11 & * 4 5 6. 8 9. R T. Y.
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