Nowadays, many IT giants such as Facebook, Google, and Amazon adopt non-relational database (NoSQL, Not only SQL) technologies to manage their systems. Although these kind of database technologies have made outstanding contributions to the development of the IT industry, it also exposed some security risks such as SQL injection attacks. Up to now, there are many solutions to counter SQL injecti...

PERFORMANCE ANALYSIS OF SCALABLE SQL AND NOSQL DATABASES: AQUANTITATIVE APPROACHby HARISH BALASUBRAMANIANMay 2014Advisor: Dr.Weisong ShiMajor: Computer ScienceDegree: Master of Science Benchmarking is a common method in evaluating and choosing a NoSQL database.There are already lots of benchmarking reports available in internet and research papers. Most ofthe ben...

In this new era of “big data”, traditional DBMSs are under attack from two sides. At one end of the spectrum, the use of document store NoSQL systems (e.g. MongoDB) threatens to move modern Web 2.0 applications away from traditional RDBMSs. At the other end of the spectrum, big data DSS analytics that used to be the domain of parallel RDBMSs is now under attack by another class of NoSQL data an...

The World Wide Web infrastructure together with its more than 2 billion users enables to store information at a rate that has never been achieved before. This is mainly due to the will of storing almost all end-user interactions performed on some web applications. In order to reply to scalability and availability constraints, many web companies involved in this process recently started to desig...

Relational databases are a technology used universally that enables storage, management and retrieval of varied data schemas. However, execution of requests can become a lengthy and inefficient process for some large databases. Moreover, storing large amounts of data requires servers with larger capacities and scalability capabilities. Relational databases have limitations to deal with scalabil...

In recent years, “document store” NoSQL systems have exploded in popularity. A large part of this popularity has been driven by the adoption of the JSON data model in these NoSQL systems. JSON is a simple but expressive data model that is used in many Web 2.0 applications, and maps naturally to the native data types of many modern programming languages (e.g. Javascript). The advantages of these...

NoSQL databases rise as a solution to manage large amounts of data in the cloud. Mechanisms to guarantee Quality of Service in can significantly benefit from performance predictability. Building an accurate predictive model to estimate a DBMS performance in a cloud environment is challenging since i) workload and resources allocation change dynamically; ii) concurrency and distribution introduc...