NoSQL, which stand for "not only SQL," is a database that provides a mechanism for storage and retrieval of data. It can accommodate a wide variety of data models, including document, graph stores such as Giraph and Neo4J, key-value like Redis and Riak, and wide-column. NoSQL is an alternative to relational databases or where data is modeled in tabular format.

 

NoSQL databases have become a preferred approach for a variety of reasons. Aside from its flexibility, its advantage also lies on its high scalability. NoSQL can handle huge amount of data since it supports automatic database partitioning, compared to SQL databases which need complex arrangements for sharding to be possible. It is also the preferred type for application that require multi-row transactions since SQL is table-based. NoSQL is also used when data is changing and growing over time and lacks structure.

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    I have a Neo4j database, where nodes are professors, and relationships are co-authorships on a publication. IN SHORT: Essentially, the project is to run a graph algorithm on a subset of nodes. IN LONG: I want to have a cypher query, that uses the PageRank algorithm in the Neo4j Graph Algorithms library, to add a PageRank attribute to a node within a subset of nodes. This subset of nodes needs t...

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    Profile - Data architect with years of experience in the design, development and upgrade of complex data warehouses Context - Integrating two MySQL databases and one MongoDB database to create a data lake/hub. Task - Validating the design and providing guidance on the implementation of the data hub/lake. Timing - Two to five days mid-April Type - Fully remote

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    Functionality 1 - Always on menu bar at top with search, collapsible left menu bar Functionality 2 - 2nd always on menu bar at top under functionality 1 with add chart, add data options. Clicking these buttons give the options to drag or add charts many different chart options onto main dashboard. Functionality 3 - Time scale dropdown which allows time scale selection which then adjusts charts/d...

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    We have a client with a platform that serves messages to customers through an app related to home We have a client with a platform that serves messages to customers through an app related to home maintenance. These messages are filtered through a set of criteria. This ‘engine’ will automate and refine the filtering criteria by seeking a ‘best match’ between buildings/us...

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    Ler arquivos em formato Mestastock, extrair algumas informações dos arquivos. Calcular o indicador Linha de avanço e declínio com base nas informações dos arquivos do metastock. Disponibilizei um arquivo .zip como modelo para poder baixar dos arquivos no formato metastock.

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