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Database Relational Model
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The purpose of this paper is to investigate the impact of total quality management practices on corporate social responsibility in Malaysian hotels using the supply chain management model, namely, the supply chain operations reference model (SCOR). While considering the Malaysian hospitality industry, the database was developed. For a sample of 250 Malaysian hotels, with 3-5 stars, the database comprised of representative parameters related to CSR and TQM.
11p
longtimenosee09
08-04-2024
0
0
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Bài giảng "Lưu trữ và xử lý dữ liệu lớn: Chương 4 - Cơ sở dữ liệu phi quan hệ NoSQL (Phần 1)" trình bày các nội dung chính sau đây: Kỷ nguyên của cơ sở dữ liệu, trường hợp sử dụng NoSQL, mô hình dữ liệu quan hệ, kho lưu trữ cơ sở dữ liệu đồ thị;... Mời các bạn cùng tham khảo!
43p
gaupanda025
09-04-2024
3
2
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Secure data management in decentralized systems presents a collection of essays, covering a wide range of today's active areas closely related to database security organized as follows. In Part I, We review classical work in database security, and report their recent advances and necessary extensions. In Part 11, We shift our focus to security of the Extensible Markup Language (XML) and other new data models. The need for cross-domain resource and information sharing dramatically changes the approaches to access control.
461p
longtimenosee05
31-03-2024
8
0
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Bladder cancer (BLCA) is the ninth most common cancer globally, as well as the fourth most common cancer in men, with an incidence of 7%. However, few effective prognostic biomarkers or models of BLCA are available at present.
19p
vileonardodavinci
23-12-2023
5
2
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Part 1 of ebook "Principles of financial modelling: Model design and best practices using Excel and VBA" provides readers with contents including: introduction to modelling, core themes and best practices; model design and planning; model building, testing and auditing; sensitivity and scenario analysis, simulation and optimisation; the modelling of risk and uncertainty, and using simulation;...
211p
dangsovu
20-10-2023
7
5
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To accurately screen potential immune cells that can predict the survival of colorectal cancer (CRC) patients and identify related prognostic predictors. The sample data of CRC patients were downloaded from the GEO database as a training set to establish a prognosis-scoring model and screen prognosis-related immune cells. The sample data of CRC patients from the TCGA database were used as the validation set.
10p
vischultz
20-10-2023
2
1
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In this study, an artificial neural network-based Bayesian regularization (ANN) model is proposed to predict the compressive strength of concrete. The database in this study includes 208 experimental results synthesized from laboratory experiments with 9 input variables related to temperature change and design material composition.
13p
visharma
20-10-2023
5
4
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We used pyroptosis-related genes to establish a risk–score model for prognostic prediction of liver hepatocellular carcinoma (LIHC) patients. A total of 52 pyroptosis-associated genes were identifed. Then, data for 374 LIHC patients and 50 normal individuals were acquired from the TCGA database.
23p
visharma
20-10-2023
4
2
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Ebook "Database design - From novice to professional" includes content: What can go wrong; guided tour of the development process; initial requirements and use cases; learning from the data model, developing a data model, generalization and specialization, from data model to relational schema; normalization; more on keys and constraints, queries, user interface, other implementations,...and other contents.
267p
haojiubujain07
20-09-2023
6
4
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Ebook "Databases demystified - A self-teaching guide" includes content: Database fundamentals, exploring relational database components, forms based database queries, introduction to SQL, the database life cycle, logical database design using normalization, data and process modeling, physical database design, connecting databases to the outside world, database security, database implementation, databases for online analytical processing.
361p
haojiubujain07
20-09-2023
4
4
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Ebook "Databases demystified" includes content: Database fundamentals, exploring relational database components, forms based database queries, introduction to SQL, the database life cycle, logical database design using normalization, data and process modeling, physical database design, connecting databases to the outside world, database security, database implementation, databases for online analytical processing.
362p
haojiubujain07
20-09-2023
3
3
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Ebook "Symbolic data analysis and the SODAS software" includes content: Improved generation of symbolic objects from relational databases, exporting symbolic objects to databases, a statistical metadata model for symbolic objects, editing symbolic data, the normal symbolic form, unsupervised divisive classification, hierarchical and pyramidal clustering, clustering methods in symbolic data analysis, visualizing symbolic data by kohonen maps
478p
haojiubujain07
20-09-2023
3
3
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Part 1 of ebook "Graph databases: New opportunities for connected data" provides readers with contents including: chapter 1 - Introduction; chapter 2 - Options for storing connected data; chapter 3 - Data modeling with graphs; chapter 4 - Building a graph database application;...
122p
tieulangtran
28-09-2023
5
2
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To assess the clinical characteristics and the risk factors related to the unfavorable prognosis of endometrioid ovarian carcinoma (EOVC) based on data from the Surveillance, Epidemiology, and End Results (SEER) database and two clinical centers in China.
13p
vioracle
29-09-2023
7
3
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After completing this chapter, students will be able to: Become familiar with several object-persistence formats, be able to map problem domain objects to different object-persistence formats, be able to apply the steps of normalization to a relational database, be able to optimize a relational database for object storage and access,...
33p
abcxyz123_04
30-03-2020
41
3
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Chapter 1 provides a general overview of the nature and purpose of database systems. We explain how the concept of a database system has developed, what the common features of database systems are, what a database system does for the user, and how a database system interfaces with operating systems.
34p
haojiubujain04
27-07-2023
6
4
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Chapter 2 introduces the relational model of data, covering basic concepts such as the structure of relational databases, database schemas, keys, schema diagrams, relational query languages, and relational operations.
96p
haojiubujain04
27-07-2023
12
4
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This chapter provides an overview of the database-design process, with major emphasis on database design using the entity-relationship data model. The entity-relationship data model provides a high-level view of the issues in database design, and of the problems that we encounter in capturing the semantics of realistic applications within the constraints of a data model. UML class-diagram notation is also covered in this chapter.
82p
haojiubujain04
27-07-2023
7
4
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Chapter 2 - Intro to relational model. Chapter 2 introduces the relational model of data, covering basic concepts such as the structure of relational databases, database schemas, keys, schema diagrams, relational query languages, and relational operations.
30p
haojiubujain04
27-07-2023
12
3
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Appendix C - Other relational languages, first presents the relational query language Query-by-Example (QBE), which was designed to be used by non-programmers. In QBE, queries look like a collection of tables containing an example of data to be retrieved. The graphical query language of Microsoft Access, which is based on QBE, is presented next, followed by the Datalog language, which has a syntax modeled after the logic-programming language Prolog.
61p
haojiubujain04
27-07-2023
12
5
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