Python Data Science Essentials

... topics: • How to set up a Python Data Science Toolbox • Using IPython • An overview of the data that we are going to study in this book Introducing data science and Python Data science is a relatively ... Introducing data science and Python Installing Python Python or Python 3? Step-by-step installation A glance at the essential Python packages 3 NumPy SciPy 6 pa...

Ngày tải lên: 03/06/2015, 08:41

... www.it-ebooks.info Agile Data Science Russell Jurney www.it-ebooks.info Agile Data Science by Russell Jurney Copyright © 2014 Data Syndrome LLC All rights reserved Printed ... Agile Big Data Big Words Defined Agile Big Data Teams Recognizing the Opportunity and Problem Adapting to Change Agile Big Data Process Code Review and Pair Programming Agile Environments: .....

Ngày tải lên: 01/08/2014, 17:39

... Methods 23 1. 10 Who Should Be Involved in Data Modeling? 1. 11 Is Data Modeling Still Relevant? 1. 11. 1 1. 11. 2 1. 11. 3 1. 11. 4 1. 11. 5 1. 11. 6 1. 11. 7 23 24 Costs and Benefits of Data Modeling 25 Data Modeling ... Basic Column Definition 11 .4 .1 11. 4.2 11 .4.3 11 .4.4 11 .4.5 11 .4.6 11 .4.7 11 .4.8 11 .4.9 11 .5 Primary Key Specification 11 .6 F...

Ngày tải lên: 08/08/2014, 18:22

... 0 126 7 70964 22 617 50607 Clark Smith Walsh Black 05 12 05 05 Auditing Legal Auditing Auditing HO MS HO HO Qualification Table Employee Number Qualification Year 0 126 7 0 126 7 0 126 7 70964 22 617 22 617 ... Auditing Legal HO MS Qualification Table Employee Number Qualification Year 0 126 7 0 126 7 0 126 7 70964 22 617 22 617 Figure 2. 4 Qualification Description Bachelor of Arts Ma...

Ngày tải lên: 08/08/2014, 18:22

... classify Operation be classified by Variation (d) Figure 3. 33 Alternative models for operations and operation types 3. 9 Summary ■ 109 (Figure 3. 33( d)) This diagram looks the same as the original, ... Figure 3. 33( b) Or we could allow operation types to be either basic or hybrid, as in the original model, but record the component operations of hybrid operations, resulting in Figure...

Ngày tải lên: 08/08/2014, 18:22

... float datatype can be used The decimal Datatype Number accommodated integer Figure 5 .4 Length (var)char 36 1,296 46 ,656 1,679,616 60 ,46 6,176 2,176,782,336 78,3 64, 1 64, 096 2.82×1012 127 32,767 2, 147 ,48 3, 647 ... (user-defined datatypes), you should assign to each column the appropriate DBMS datatype (as indicated in Sections 5 .4. 4.1 thru 5 .4. 4 .4) If, however, you are using an...

Ngày tải lên: 08/08/2014, 18:22

... Data Model Logical Data Model Review Logical Data Model Develop Information Requirements Business Specialist Database Designer Design Physical Data Model Physical Data Model Review Physical Data ... Organizing the Data Modeling Task database schemas These tasks can be better supported by automated tools But in preparing for a data modeling project, or setting up an ongoing...

Ngày tải lên: 08/08/2014, 18:22

... Fred Anne Mary Sue Jane 6/ 2/1953 3/8/1982 7/5/1 965 Anne Fred Anne Mary Sue Jane Mary Sue Jane Anne Fred Anne 6/ 2/1953 3/8/1982 7/5/1 965 6/ 2/1953 3/8/1982 7/5/1 965 Figure 10. 16 Symmetry leading to ... price on invoice.”) Even if you have adopted a data- driven approach, in which data modeling precedes process modeling, you should plan to verify the data model against the pro...

Ngày tải lên: 08/08/2014, 18:22

... logical data model should not specify redundant data, derivable attributes in the conceptual data model should not become columns in the logical data model However, the designer of the physical data ... that the data is to be held in some medium other than the relational database: nondatabase files, XML streams, and so on 11.3.3 Classification Entity Classes As discussed in Section...

Ngày tải lên: 08/08/2014, 18:22

... security control data Data capture control, logging, and audit data Data distribution control, logging, and audit data Translation tables Other migration/interface support data Metadata 12.7 Views ... data block nonleaf block leaf block data block Figure 12.4 data block leaf block data block data block leaf block data block data block data block Balanced tree index str...

Ngày tải lên: 08/08/2014, 18:22

... 12/25 /93 12/25 /93 12/21 /93 12/23 /93 12/25 /93 12/25 /93 12/25 /93 Figure 14.12 12/25 /93 National Closure Date Reason 12/25 /93 Christmas Post office closuresnormalized after subtyping 14.5 .9 Enforcement ... Maintenance Local Holiday 12/25 /93 12/25 /93 Christmas Christmas 12/25 /93 12/25 /93 12/25 /93 12/25 /93 Christmas Christmas Christmas Christmas Figure 14.11 12/21 /93 12/23 /93 S...

Ngày tải lên: 08/08/2014, 18:22

... Chapter 16 Modeling for Data Warehouses and Data Marts data to suit the multidimensional database products that underpin many data marts 16.2 Characteristics of Data Warehouses and Data Marts ... acceptable for the data mart but would not be so for an operational database or data warehouse 16.5 Modeling for the Data Warehouse Many successful data warehouses have been d...

Ngày tải lên: 08/08/2014, 18:22

... is a mechanism for reducing bandwidth requirements when transporting: a Voice over IP b Voice over Frame Relay c Voice over ATM d A, B, and C e A and B f B and C g A and C 6) Every minute of ... Real-time Transport Protocol (RTP) is an industry standard for transporting: a Voice over IP b Voice over Frame Relay c Voice over ATM d A, B, and C e A and B f B and C g A...

Ngày tải lên: 24/01/2014, 19:20