The Relational Model and Languages

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   Download

This paper proposes a mixed-integer linear programming (MILP) model aiming to optimize the topology of transmission networks considering power loss. The proposed MILP model is converted from the MINLP model using the piecewise linearization technique and precisely linearizing the product of the binary and continuous variables. The objective function of the TNEP problem in this study is to minimize the total cost of the power system, including the investment cost for new transmission lines, maintenance cost, cost related to energy losses loss, and production cost of generators.

9p giangnhanly 02-10-2023 3 3   Download

Part 1 of ebook "Rational cybersecurity for business: The security leaders’ guide to business alignment" provides readers with contents including: executive overview; identify and align security-related roles; put the right security governance model in place; strengthen security culture through communications and awareness programs; manage risk in the language of business;...

178p tieulangtran 28-09-2023 13 4   Download

Text stream clustering is considered as a primitive task in natural language processing (NLP) which contains unique challenges related to the sparsity/noise, infinite length and cluster evolution of the input documents.

10p viannee 02-08-2023 7 3   Download

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 20 4   Download

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   Download

Chapter 22 - Object-based databases. This chapter covers objectbased databases. The chapter describes the object-relational data model, which extends the relational data model to support complex data types, type inheritance, and object identity. The chapter also describes database access from object-oriented programming languages.

36p haojiubujain04 27-07-2023 5 3   Download

Ebook Database management systems/managing database: Part 1 presents the following content: Database Fundamentals; Database Relational Model; Structured Query Language; Advanced SQL; Integrity Constraints; Relational Language and Database Design. Please refer to the documentation for more details.

112p chankora 16-06-2023 5 2   Download

Ebook Database systems: A practical approach to design, implementation, and management (Fourth Edition) – Part 1 presents the following content: Part 1 background, part 2 the relational model and languages, part 3 database analysis and design techniques, part 4 methodology, part 5 selected database issues.

735p haojiubujain01 06-06-2023 8 3   Download

Ebook Database systems: Design, implementation, and management – Part 1 presents the following contents: Chapter 1: Database systems, Chapter 2: Data Models, Chapter 3: The Relational Database Model, Chapter 4: Entity Relationship (ER) Modeling, Chapter 5: Normalization of Database Tables, Chapter 6: Introduction to Structured Query Language (SQL), Chapter 7: Advanced SQL, Chapter 8: Database Design.

460p haojiubujain01 06-06-2023 8 3   Download

Ebook Database systems: A practical approach to design, implementation, and management (Sixth edition) - Part 1 presents the following contents: Part 1 background, part 2 the relational model and languages, part 3 database analysis and design, part 4 methodology, part 5 selected database issues.

784p haojiubujain01 06-06-2023 5 3   Download

Ebook Fundamentals of Database Systems (Third edition): Part 1 presents the following content: Part 1: basic concepts; part 2: relational model, languages, and systems; part 3: object-oriented and extended relational database technology.

415p haojiubujain01 06-06-2023 8 3   Download

This article describes an ensembling system to automatically extract adverse drug events and drug related entities from clinical narratives, which was developed for the 2018 n2c2 Shared Task Track 2. Materials and Methods: We designed a neural model to tackle both nested (entities embedded in other entities) and polysemous entities (entities annotated with multiple semantic types) based on MIMIC III discharge summaries.

9p vighostrider 25-05-2023 3 2   Download

This book "Database System Concepts (Sixth edition)" present the fundamental concepts of database management. These concepts include aspects of database design, database languages, and database-system implementation. Part 1 of book provide students with knowledge about: database-system applications; relational databases; structure of relational databases; introduction to SQL; intermediate SQL; advanced SQL; formal relational query languages; database design; database design and the E-R model; relational database design; data storage and querying;...

651p britaikridanik 05-07-2022 15 5   Download

In the literature, the effectiveness of the application of flipped classroom in the language teaching and learning has been examined and highly appreciated by many researchers and teachers. Therefore, this paper aims to review a number of research related to flipped classroom in teaching different language skills in order to justify its practice in language teaching.

3p vianapatricia 10-06-2022 19 5   Download

Lecture Database Systems - Chapter 0: Welcome has present the contents of the 14-week program of Database System; accompanied by reference materials for the course and the form of the final exam;...

5p andromedashun 26-05-2022 10 3   Download

The framework as it relates to the validation of language tests in general is presented and the model is then applied to two tests of spoken English by way of illustration. Although examples are included, the main aim is to provide a theoretical justification for a focus on comprehensibility and the inclusion of linguistic variation in the assessment of ELF and to present a validation framework that can be applied by test developers and test users.

16p nguathienthan9 08-12-2020 13 2   Download

The effective combination of texts and knowledge may improve performances of natural language processing tasks. For the recognition of chemical-induced disease (CID) relations which may span sentence boundaries in an article, although existing CID systems explored the utilization for knowledge bases, the effects of different knowledge on the identification of a special CID haven’t been distinguished by these systems.

12p viconnecticut2711 28-10-2020 14 0   Download

Pangasius (Pangasianodon hypophthalmus) (catfish) is a popular food in many countries around the world as well as in Viet Nam. At the same time, Pangasius also brings great economic benefits from the exportation. However, unplanned catfish farming leads to environmental degradation, susceptible to disease and high consumption of water. Modeling is a solution that helps to better control the biological processes in the pond, optimizes feed supply and water use.

9p angicungduoc5 13-06-2020 26 0   Download

This chapter covers objectbased databases. The chapter describes the object-relational data model, which extends the relational data model to support complex data types, type inheritance, and object identity. The chapter also describes database access from object-oriented programming languages.

32p thuongdanguyetan03 18-04-2020 8 1   Download