Database theory
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Blurring the Lines between Blockchains and Database Systems Open
Within the last few years, a countless number of blockchain systems have emerged on the market, each one claiming to revolutionize the way of distributed transaction processing in one way or the other. Many blockchain features, such as byz…
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Multi-model Databases Open
The variety of data is one of the most challenging issues for the research and practice in data management systems. The data are naturally organized in different formats and models, including structured data, semi-structured data, and unst…
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Analisis Teknik Entity-Relationship Diagram dalam Perancangan Database Sebuah Literature Review Open
There are many techniques used in database design. One of them is entity relationship diagram technique. ERD is one of the main diagrammatic representations of the conceptual data model that reflects the data requirements of users in a dat…
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An overview of deterministic database systems Open
Deterministic database systems show great promise, but their deployment may require changes in the way developers interact with the database.
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The Object-Oriented Database Management System versus the Relational Database Management System: A Comparison Open
Both object-oriented and relational database management systems are referred to as DBMS. The web-scale is expanding at an incredible rate, and with it comes an increase in mobile applications, technologies, and social media platforms. The …
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Relational Database Schema Evolution: An Industrial Case Study Open
International audience
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Ontology-Mediated Queries for Probabilistic Databases Open
Probabilistic databases (PDBs) are usually incomplete, e.g., containing only the facts that have been extracted from the Web with high confidence. However, missing facts are often treated as being false, which leads to unintuitive results …
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Association-Oriented Database Model — <i>n</i>-ary Associations Open
This paper provides a comparison between methods used to represent unary, binary and n-ary relations in the relational database (RDB) and object-oriented database (OODB) models and the association-oriented database (AODB) model proposed in…
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A Formal Framework for Probabilistic Unclean Databases. Open
Most theoretical frameworks that focus on data errors and inconsistencies follow logic-based reasoning. Yet, practical data cleaning tools need to incorporate statistical reasoning to be effective in real-world data cleaning tasks. Motivat…
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Migration of data from relational database to graph database Open
Relational databases have been widely used in many applications until today and they have met needs for data-intensive domains and transactions, but today data is growing faster than ever and extracting information from this huge data is b…
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Information-Flow Control for Database-Backed Applications Open
Securing database-backed applications requires tracking information across the application program and the database together, since securing each component in isolation may still result in an overall insecure system. Current research exten…
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A Comprehensive Approach to ‘Now’ in Temporal Relational Databases: Semantics and Representation Open
Now-related temporal data play an important role in many applications. Clifford et al.'s approach is a milestone to model the semantics of `now' in temporal relational databases. Several relational representation models for now-related dat…
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Probabilistic Public Key Encryption for Controlled Equijoin in Relational Databases Open
Journal Article Probabilistic Public Key Encryption for Controlled Equijoin in Relational Databases Get access Yujue Wang, Yujue Wang *Corresponding author: [email protected] Search for other works by this author on: Oxford Academic Google…
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Coverage-Aware Test Database Reduction Open
Functional testing of applications that process the information stored in databases often requires a careful design of the test database. The larger the test database, the more difficult it is to develop and maintain tests as well as to lo…
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Ontology-Mediated Queries for Probabilistic Databases Open
Probabilistic databases (PDBs) are usually incomplete, e.g., contain only the facts that have been extracted from the Web with high confidence. However, missing facts are often treated as being false, which leads to unintuitive results whe…
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Analisis Teknik Entity-Relationship Diagram Dalam Perancangan Database Open
The purpose of this research is to find out how to develop the data entity relationship model in the data based data management system. Where the entity relationship is a system that is important for the company or as a liaison to explain …
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Active Database System Approach and Rule Based in the Development of Academic Information System Open
Active database system is a database system which is capable of generating a certain action automatically if it detects an event that meets certain conditions. The existence of Event Condition Action (ECA) rules and functional components s…
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Most Probable Explanations for Probabilistic Database Queries Open
Forming the foundations of large-scale knowledge bases, probabilistic databases have been widely studied in the literature. In particular, probabilistic query evaluation has been investigated intensively as a central inference mechanism. H…
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Efficient Uncertainty Tracking for Complex Queries with Attribute-level Bounds Open
Incomplete and probabilistic database techniques are principled methods for coping with uncertainty in data. Unfortunately, the class of queries that can be answered efficiently over such databases is severely limited, even when advanced a…
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Survey in Classical Database and Quantum database With Logical Design To Memory Management , File Structure and Authentication Module For Quantum Database Open
This is a survey for the comparison between existing model which is used in classical database and quantum computing. Theoretically it is possible to converge both of this quantum database in classical database as we will always have Hami…
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Ontology-Mediated Query Answering over Log-Linear Probabilistic Data Open
Large-scale knowledge bases are at the heart of modern information systems. Their knowledge is inherently uncertain, and hence they are often materialized as probabilistic databases. However, probabilistic database management systems typic…
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Property Testing for Bounded Degree Databases Open
Aiming at extremely efficient algorithms for big data sets, we introduce property testing of relational databases of bounded degree. Our model generalises the bounded degree model for graphs (Goldreich and Ron, STOC 1997). We prove that in…
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Functional querying in graph databases Open
The paper is focused on a functional querying in graph databases. We consider labelled property graph model and mention also the graph model behind XML databases. An attention is devoted to functional modelling of graph databases both at a…
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ONTOLOGICAL MODEL FOR INTEGRATION OF STRUCTURALLY HETEROGENEOUS SPATIAL DATABASES OF VARIOUS SUBJECT AREAS INTO A UNIFORM REGIONAL DATABASE Open
Article is devoted to a solution of the problem of integration of spatial databases into the uniform regional database for the organization of information support of decision-making for management of a large industrial region. The authors …
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Performance comparison of the most popular relational and non-relational database management systems Open
Context. Database is an essential part of any software product. With an emphasis on application performance, database efficiency becomes one of the key factors to analyze in the process of technology selection. With a development of new da…
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Automatic configuration of the Cassandra database using irace Open
Database systems play a central role in modern data-centered applications. Their performance is thus a key factor in the efficiency of data processing pipelines. Modern database systems expose several parameters that users and database adm…
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Adapting Queries to Database Schema Changes in Hybrid Polystores Open
Database schema change has long been recognized as a complex, time-consuming and risky process. It requires not only the modification of database structures and contents, but also the joint evolution of related application programs. This c…
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Queries with Arithmetic on Incomplete Databases Open
The standard notion of query answering over incomplete database is that of certain answers, guaranteeing correctness regardless of how incomplete data is interpreted. In majority of real-life databases, relations have numerical columns and…
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Answering FO+MOD Queries Under Updates on Bounded Degree Databases Open
We investigate the query evaluation problem for fixed queries over fully dynamic databases, where tuples can be inserted or deleted. The task is to design a dynamic algorithm that immediately reports the new result of a fixed query after e…
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Modeling database management systems in medicine Open
Nowadays, the role of computer and information technology in medical education is very important. Increasingly, information pressures are on the agenda for improving the methods of selecting, sorting and utilizing information for optimal, …