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Author: Apostolos N. Papadopoulos
Publisher: Springer Nature
ISBN: 3031018761
Category : Computers
Languages : en
Pages : 134
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Book Description
This book is a gentle introduction to dominance-based query processing techniques and their applications. The book aims to present fundamental as well as some advanced issues in the area in a precise, but easy-to-follow, manner. Dominance is an intuitive concept that can be used in many different ways in diverse application domains. The concept of dominance is based on the values of the attributes of each object. An object dominates another object if is better than . This goodness criterion may differ from one user to another. However, all decisions boil down to the minimization or maximization of attribute values. In this book, we will explore algorithms and applications related to dominance-based query processing. The concept of dominance has a long history in finance and multi-criteria optimization. However, the introduction of the concept to the database community in 2001 inspired many researchers to contribute to the area. Therefore, many algorithmic techniques have been proposed for the efficient processing of dominance-based queries, such as skyline queries, -dominant queries, and top- dominating queries, just to name a few.
Author: Apostolos N. Papadopoulos
Publisher: Springer Nature
ISBN: 3031018761
Category : Computers
Languages : en
Pages : 134
Get Book Here
Book Description
This book is a gentle introduction to dominance-based query processing techniques and their applications. The book aims to present fundamental as well as some advanced issues in the area in a precise, but easy-to-follow, manner. Dominance is an intuitive concept that can be used in many different ways in diverse application domains. The concept of dominance is based on the values of the attributes of each object. An object dominates another object if is better than . This goodness criterion may differ from one user to another. However, all decisions boil down to the minimization or maximization of attribute values. In this book, we will explore algorithms and applications related to dominance-based query processing. The concept of dominance has a long history in finance and multi-criteria optimization. However, the introduction of the concept to the database community in 2001 inspired many researchers to contribute to the area. Therefore, many algorithmic techniques have been proposed for the efficient processing of dominance-based queries, such as skyline queries, -dominant queries, and top- dominating queries, just to name a few.
Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 538
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Book Description
Author: Gordon Du
Publisher: Packt Publishing Ltd
ISBN: 1849682372
Category : Computers
Languages : en
Pages : 517
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Book Description
Utilize the power of SQL queries to bring Business Intelligence to your small to medium-sized business with this book and eBook.
Author: Foto Afrati
Publisher: Morgan & Claypool Publishers
ISBN: 1681730324
Category : Computers
Languages : en
Pages : 237
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Book Description
The topic of using views to answer queries has been popular for a few decades now, as it cuts across domains such as query optimization, information integration, data warehousing, website design, and, recently, database-as-a-service and data placement in cloud systems. This book assembles foundational work on answering queries using views in a self-contained manner, with an effort to choose material that constitutes the backbone of the research. It presents efficient algorithms and covers the following problems: query containment; rewriting queries using views in various logical languages; equivalent rewritings and maximally contained rewritings; and computing certain answers in the data-integration and data-exchange settings. Query languages that are considered are fragments of SQL, in particular, select-project-join queries, also called conjunctive queries (with or without arithmetic comparisons or negation), and aggregate SQL queries.
Author: Foto Afrati
Publisher: Springer Nature
ISBN: 3031018710
Category : Computers
Languages : en
Pages : 253
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Book Description
The topic of using views to answer queries has been popular for a few decades now, as it cuts across domains such as query optimization, information integration, data warehousing, website design and, recently, database-as-a-service and data placement in cloud systems. This book assembles foundational work on answering queries using views in a self-contained manner, with an effort to choose material that constitutes the backbone of the research. It presents efficient algorithms and covers the following problems: query containment; rewriting queries using views in various logical languages; equivalent rewritings and maximally contained rewritings; and computing certain answers in the data-integration and data-exchange settings. Query languages that are considered are fragments of SQL, in particular select-project-join queries, also called conjunctive queries (with or without arithmetic comparisons or negation), and aggregate SQL queries. This second edition includes two new chapters that refer to tree-like data and respective query languages. Chapter 8 presents the data model for XML documents and the XPath query language, and Chapter 9 provides a theoretical presentation of tree-like data model and query language where the tuples of a relation share a tree-structured schema for that relation and the query language is a dialect of SQL with evaluation techniques appropriately modified to fit the richer schema.
Author: Paolo Bruni
Publisher: IBM Redbooks
ISBN: 0738437093
Category : Computers
Languages : en
Pages : 454
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Book Description
The IBM® DB2® Analytics Accelerator Version 2.1 for IBM z/OS® (also called DB2 Analytics Accelerator or Query Accelerator in this book and in DB2 for z/OS documentation) is a marriage of the IBM System z® Quality of Service and Netezza® technology to accelerate complex queries in a DB2 for z/OS highly secure and available environment. Superior performance and scalability with rapid appliance deployment provide an ideal solution for complex analysis. This IBM Redbooks® publication provides technical decision-makers with a broad understanding of the IBM DB2 Analytics Accelerator architecture and its exploitation by documenting the steps for the installation of this solution in an existing DB2 10 for z/OS environment. In this book we define a business analytics scenario, evaluate the potential benefits of the DB2 Analytics Accelerator appliance, describe the installation and integration steps with the DB2 environment, evaluate performance, and show the advantages to existing business intelligence processes.
Author: Paul McFedries
Publisher: Que Publishing
ISBN: 0132714108
Category : Computers
Languages : en
Pages : 497
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Book Description
“Everything you need to master Access 2007 forms, reports, and queries.” –Charles Carr, Reviews Editor, ComputorEdge Magazine Create Forms for Business Ensure Data Entry Accuracy Build Elegant Form Interfaces Collect Data Via Email Design Effective Business Reports Make an Invoice Report Create Mailing Labels Extract Data Work with Multiple Tables Calculate Discounts Analyze Data Develop your Microsoft Access expertise instantly with proven techniques Let’s face it: Microsoft Access is a large, intimidating program. Most people never progress beyond creating simple tables and using wizards to build basic forms and reports. At the same time, you need information and you know that what you seek is embedded somewhere in your Access database. Without a more sophisticated knowledge of how to extract and present that data, you’re forced to rely on office gurus and overworked IT people to provide canned reports or one-size-fits-all solutions. This book changes all that by giving you the skills to build efficient front-ends for data (forms), publish the results in an attractive and easy-to-read format (reports), and extract the data you need (queries). This book shuns the big Access picture and instead focuses intently on forms, reports, and queries. This in-depth approach will give you the knowledge and understanding you need to get at the data and prove the old saw that knowledge is power. · Focuses on the three technologies that you must master to get the most out of Access: forms, reports, and queries. · Avoids database theory in favor of practical know-how that you can put to use right away. · Packed full of real-world examples and techniques to help you learn and understand the importance of each section. · Covers what’s new and changed in Microsoft Access 2007. Introduction Part I: Creating Forms Chapter 1 Creating and Using a Form Chapter 2 Working with Form Controls Chapter 3 Designing Forms for Efficient and Accurate Data Entry Chapter 4 Designing Forms for Business Use Chapter 5 Creating Specialized Forms Part II: Designing and Customizing Reports Chapter 6 Creating and Publishing a Report Chapter 7 Designing Effective Business Reports Chapter 8 Designing Advanced Reports Chapter 9 Creating Specialized Reports Part III: Creating Powerful Queries Chapter 10 Creating a Basic Query Chapter 11 Building Criteria Expressions Chapter 12 Working with Multiple-Table Queries Chapter 13 Creating Advanced Queries Chapter 14 Creating PivotTable Queries Chapter 15 Querying with SQL Statements Index
Author: Olivier Pivert
Publisher: World Scientific
ISBN: 1848168691
Category : Computers
Languages : en
Pages : 347
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Book Description
This book aims to show that fuzzy set theory constitutes a highly expressive framework for modeling preference queries. It presents a study of the algorithmic aspects related to the evaluation of such queries in order to demonstrate that this framework offers a good trade-off between expressivity and efficiency. Numerous examples and proofs are liberally and lucidly demonstrated throughout, and greatly enhance the detailed theoretical aspects explored in the book.
Author:
Publisher:
ISBN:
Category : Genealogy
Languages : en
Pages : 718
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 524
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Book Description
