From fde465354eb0dd1972d6dce5f66fd72a452fba53 Mon Sep 17 00:00:00 2001 From: Sean Date: Sat, 2 Mar 2024 11:45:15 -0500 Subject: [PATCH] More Notes --- Notes 1-9-24.md | 4 -- Notes.md | 5 ++ Readings/Midterm topics-CS448.odt | Bin 0 -> 36687 bytes Topics and Readings.md | 102 ++++++++++++++++++++++++++++++ 4 files changed, 107 insertions(+), 4 deletions(-) delete mode 100644 Notes 1-9-24.md create mode 100644 Readings/Midterm topics-CS448.odt create mode 100644 Topics and Readings.md diff --git a/Notes 1-9-24.md b/Notes 1-9-24.md deleted file mode 100644 index 8be56b9..0000000 --- a/Notes 1-9-24.md +++ /dev/null @@ -1,4 +0,0 @@ -Claude Shannon? came up with theory of information. You are looking for information and knowledge - -You want to integrate all the data. Some centralized warehouse. Utilities to access the data. Queries to let you get the data you care about. - diff --git a/Notes.md b/Notes.md index a5ad634..96ec32b 100644 --- a/Notes.md +++ b/Notes.md @@ -1,3 +1,8 @@ +# 1/9/24 +Claude Shannon? came up with theory of information. You are looking for information and knowledge + +You want to integrate all the data. Some centralized warehouse. Utilities to access the data. 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+## Week 1 +#### Readings +Chapters 1-3 + +#### Main Ideas +Various types of data model, schema/subschema, data independence +- Benefits of using a DBMS +- Disk parameters + +--- +## Week 2 +#### Readings +Chapters 1-3 +Chapter 16 + +#### Main Ideas +- Think about user, database, schema/catalog, DBMS software/utilities +- Implementing query processing, recovery, privacy, concurrency software +- Performance evaluation, how to implement ideas that can improve performance (Query optimization, I/O optimization, reducing I/Os by getting more data in one I/O operation for later use) +- Relationship among data, hierarchical and network model vs relational model that deal with set of records +- Types of queries for different models +- Hierarchical model needs, commands such as *get next, get next within parent* +- Network model goes from one entity to another via links and uses the command *find next* + +--- +## Week 3 +#### Readings +Chapter 16 +Some of Chapter 17 + +#### Main Ideas +- Different types of storage and devices and their characteristics + Fig 16.1, 16.2, Table 16.2 (pages 549-550) +- Making data access more efficient on disk + ( 16.2.2) +- Buffering of blocks, buffer management, buffer replacement policies +- How to deal with fixed length and variable length records + (16.4.2) figure 16.5 +- Spanned records, blocking factor, allocating file blocks on disk + ( 16.4.3) +- File of ordered records + (16.7) +- How to deal with overflows + ( second paragraph on page 571, modifying values ( paragraph 3 on page 571) +- Primary index + Table 16.3 +- Hashing figure, Folding, Collisions, open addressing and chaining + 16.8 and page 574 +- Buckets and external hashing + ( 16.8.2) +- Extendible hashing + Figure 16.11 and Figure 16.12 +- Parallism, RAID, Stripping the data on multiple disks + +Review Questions on page 593-595 + +--- +## Week 4 +#### Readings + +--- + +## Week 5 + +--- + +## Week 6 +#### Readings +Chapter 16 +- Page 552, 553, Section 16.2.2 +- Section 16.3 +- Pages 556, 557, 558, 559 +- Figure 16.5, 16.6, 16.7, 16.8, 16.9, 16.10, 16.11, 16.12 and related pages +- RAID Tech in 16.10 +More on Chapter 17 later + +--- + +## Midterm +Chapters and Topics you must read and understand for midterm and will also be included in preparing for final exam. + +Chapter 1 all topics pages 3-28 + +Chapter 2 all topics pages 31-55. You must know DBMS component modules on page 43, database system utilities on page 45, classification of database management systems in section 2.6. Section 2.5 is too general but hard to make any questions but please read to learn about various architectures and how DBMS, OS, and hardware and communication are layered. + +Chapter 3 pages 59-68. main phases of database design, different types of attributes for an entity. You do not need to worry about ER diagram and on page 64. + +Chapter 5 all topics pages 149-170 + +Chapter 6 all topics pages 177-201, how to covert English to SQL query and vice versa + +Chapter 7 all topics pages 207-221. There exist and for all semantics. Aggregate functions and grouping. Queries in exam will not be very complicated but a good understanding of SQL features is needed. + +Chapter 8 all topics about relational algebra on pages 239-259, query trees and optimization by rearranging operators (move join at higher level in tree to do them at the end). Outer joins, left outer join, right outer join.  Some familiarity with relational calculus. s in section 8.6.1, page 269. Converting a relational algebra to SQL or relational calculus as section 8.6.4 ( briefly). Safe expression 8.6.8 on page 276. What is domain calculus and its advantages. + +Chapter 16 all topics pages 541-588. Disk storage and parameters ( also see appendix B on page 1167-1169, buffer management and replacement, fixed length, variable length records, hashing on pages 572-581, Parallel disks RAID (briefly), questions such as 16.34-16.37 and in assignment + +Chapter 17 various types of indexes, example 1 and 2 on page 605-606, multi-level indexes in section 17.2 on page 613, example 4 on page 614, general knowledge of B-Trees and B+ Trees, partitioned hashing and grid files ( pages 632-633) and bitmap indexes on page 634-635, tuning indexes page 640, section 17.7 physical database design and factors that influence it on page 643-646 ( easy to read but very useful + + +Maybe soon if he can cover it +Chapter 14 pages 459-461, informal design guidelines section 14.1 on page 461, insertion, deletion, modification anomalies, section 14.1.5 and functional dependencies and eventually normalization (first, second, third normal form of relations). Plan to cover them soon up to page 487 \ No newline at end of file