Bilgilendirme: Sürüm Güncellemesi ve versiyon yükseltmesi nedeniyle, geçici süreyle zaman zaman kesintiler yaşanabilir ve veri içeriğinde değişkenlikler gözlemlenebilir. Göstereceğiniz anlayış için teşekkür ederiz.

Browsing by Author "Hammood, Ali Hussein"

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    Master Thesis
    A comparison of NoSQL database systems: A study on MongoDB, apache HBase, and apache Cassandra
    (2016) Hammood, Ali Hussein; 01. Çankaya Üniversitesi
    Due to their many useful features, database management systems have been used widely with relational data for over 20 years. However, such systems are not able to handle massive and complex data efficiently. New systems known as NoSQL database management systems have appeared to deal with massive and complex data that provide fast and high performance. In this thesis, we discussed and tested three kinds of NoSQL database system in order to reveal their capabilities and how they respond in different operations. For this purpose, we set up a novel testing environment for each workload and examine the responses for the three systems. The results of this study show the weaknesses and strengths of each database system used in the study. Due to the different architectures of each database that we tested, we have seen different responses for each with changed workload operations. In our work, we used the Yahoo Cloud Serving Benchmark (YCSB), which is a framework designed by Yahoo to test database performance. According to the results obtained, we can conclude that MongoDB performed very well with low throughput, but not as well with high throughput. Cassandra and HBase performed very well under heavy loads due to their optimized designs. In the read operation, HBase has poor performance as compared to other systems tested.