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Multi-model query languages: taming the variety of big data
A critical issue in Big Data management is to address the variety of data–data are produced by disparate sources, presented in various formats, and...
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Database Languages
This chapter is dedicated to database languages. After the definition of the relational algebra with set-oriented and relational-oriented operators,...
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Visual query languages to design complex queries: a systematic literature review
Structured query language (SQL) is a widely used language for accessing both relational and non-relational databases. SQL is the standard form of...
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DynQ: a dynamic query engine with query-reuse capabilities embedded in a polyglot runtime
Language-integrated query (LINQ) frameworks offer a convenient programming abstraction for processing in-memory collections of data, allowing...
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An intelligent natural language query processor for a relational database
Every single byte of data is stored in either a structured or unstructured database. In this era of data exploration, retrieving and processing this...
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Research on Database Language Query Method Based on Cloud Computing Platform
Some database language query methods have the problems of time cost and resource occupation. Under this background, a database language query method...
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Foundations of Graph Path Query Languages
We survey some foundational results on querying graph-structured data. We focus on general-purpose navigational query languages, such as regular path...
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Database Migration from ORACLE to PostgreSQL
AbstractMethods of data transfer from the Oracle environment to the PostgreSQL environment with stage-by-stage organization of actions and...
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Adaptive query compilation in graph databases
Compiling database queries into compact and efficient machine code has proven to be a great technique to improve query performance and exploit...
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Machine reading comprehension model based on query reconstruction technology and deep learning
Machine reading comprehension is introduced to improve machines’ readability and understandability of human languages. This sophisticated version of...
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Languages Generated by Conjunctive Query Fragments of FC[REG]
\(\textsf{FC}\) is a finite-model variant on the theory of...
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A multilingual translator to SQL with database schema pruning to improve self-attention
Databases have a large amount of information that can be accessed by the structured query language (SQL), but this language requires technical...
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DB-GPT: Large Language Model Meets Database
Large language models (LLMs) have shown superior performance in various areas. And LLMs have the potential to revolutionize data management by...
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Automatic Query Generation Based on Adaptive Naked Mole-Rate Algorithm
In the growing information retrieval (IR) world, selecting suitable keywords and generating queries is important for effective retrieval. Modern...
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Query-based denormalization using hypergraph (QBDNH): a schema transformation model for migrating relational to NoSQL databases
With the emergence of NoSQL databases, many large applications have migrated from relational databases (RDB) due to their superior flexibility and...
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Checking Pattern Query Containment Under Shape Expression
Shape expression (ShEx) is a novel schema language for RDF/graph data and is already in use in various domains. For various kinds of schema and data...
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Query Reverse Engineering of Pre-deleted Uncorrelated Operators
Recent years have seen an increasing reliance on data processing to accomplish work tasks. However, many users do not have the programming background...
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Interactive SPARQL query formulation using provenance
We present in this paper a novel solution for assisting users in formulating SPARQL queries. The high-level idea is that users write “semi-formal...
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AQUA+: Query Optimization for Hybrid Database-MapReduce System
MapReduce has been widely recognized as an efficient tool for large-scale data analysis. It achieves high performance by exploiting parallelism among...
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Database Security
This chapter starts with an overview on database security. Then, access control is introduced with hands-on examples in the Structured Query Language...