Sökning: "star schema"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden star schema.

  1. 1. Etablering av strategier och rutiner för seriestorlekar : En fallstudie på Företag X

    Magister-uppsats, Linnéuniversitetet/Institutionen för ekonomistyrning och logistik (ELO)

    Författare :Karl Vinberg; Lukas Klevtun; [2021]
    Nyckelord :Demand patterns; EBQ formula; EOQ formula; Injection molding; Gantt chart; Capacity limitation; Newsvendor formula; Power of Two; Single- stage production system.; Efterfrågemönster; EBQ-modellen; EOQ-modellen; Formsprutning; Gantt-Schema; Kapacitetsbegränsning; Newsvendor; Power of Two; Single-stage production system.;

    Sammanfattning : Purpose: The purpose of the study is to identify, design and apply a method for operational production planning. The purpose of the method is that it takes into account the respective demand patterns of the articles, which determines the choice of calculation model and that the method also takes into account the production capacity limitation set. LÄS MER

  3. 2. Using Work Domain Analysis to Evaluate the Design of a Data Warehouse System

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för visuell information och interaktion

    Författare :Axel Iveroth; [2019]
    Nyckelord :data warehouse; work domain analysis; cognitive work analysis; abstraction hierarchy; star schema; accumulating snapshot fact table; evaluation; issue management system; waterfall model;

    Sammanfattning : Being able to perform good data analysis is a fundamental part of running any business or organization. One way of enabling data analysis is with a data warehouse system, a type of database that gathers and transforms data from multiple sources and structures it in the goal of simplifying analysis. LÄS MER

  4. 3. Database Performance for GIS : A Comparison of Database Schemas for Measurements with Spatial Attributes

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Gabriel Ingemarsson ; [2019]
    Nyckelord :;

    Sammanfattning : Spatial databases are becoming more and more important. One type of spatial database is a database of measurements, which combine positions with alphanumerical attributes. While these databases are important, little research has been done on them. There is therefore need for research on how to store this type of data most effectively. LÄS MER

  5. 4. Hive, Spark, Presto for Interactive Queries on Big Data

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Nikita Gureev; [2018]
    Nyckelord :Hadoop; SQL; interactive analysis; Hive; Spark; Spark SQL; Presto; Big Data;

    Sammanfattning : Traditional relational database systems can not be efficiently used to analyze data with large volume and different formats, i.e. big data. Apache Hadoop is one of the first open-source tools that provides a distributed data storage system and resource manager. LÄS MER

  7. 5. Consequences of converting a data warehouse based on a STAR-schema to a column-oriented-NoSQL-database

    Magister-uppsats, Högskolan i Skövde/Institutionen för informationsteknologi

    Författare :Rebecca Bodegård Gustafsson; [2018]
    Nyckelord :column-database; datawarehouse; nosql; apache; hbase; sql;

    Sammanfattning : Data warehouses based on the relational model has been a popular technology for many years, because they are very reliable due to their ACID-properties (Atomicity, Consistency, Isolation, and Durability). However, the new demands on databases today due to increasing amounts of data and data structures changing do mean that the relational model might not always be the optimal choice. LÄS MER