Database management systems

SaaS is typically accessed from various client systems through a thin client interface, such as an internet browser. The client does not manipulate or control the underlying cloud infrastructure with the viable exception of constrained user specific software configuration settings. SaaS may be considered the oldest and most mature type of cloud computing. Examples encompass Salesforce.Com sales management programs, Google’s Gmail, and Cornerstone On demand. • Platform as a Service…

hardware that are already present. This results in significant cost saving, storage space and power consumption, this also results in rapid increase in availability. Raid allows us to have a group of physical disks to form as one logical disk on the system. Using raid method of splitting the hard disk helps to read or write data at an increased speed, fault tolerance and redundancy. Raid 0 uses a form of striping. They have 2 disk which helps the data…

When creating an Oracle database one must consider what type of performance and needs you will need to keep your Real Application Cluster (RAC) environment operating at peak instances. When an Oracle database spans across multiple instances on different servers with shared data files. When the database spans across several hardware systems but it will appear as a single combined database within the application. Real Application Cluster allows the commodity to be utilized in way that they could…

\section{Dynamic summarization of data streams} We define a data stream $X$ as a possibly infinite data set where each of the samples $x_{n}$ is available only after the time instant $t_{n}$. The arrival time of consecutive samples needs not to be equidistant; i.e., $% t_{n}-t_{n-1}$ may be different from $t_{n+1}-t_{n}$. The data available from the stream $X$ up to a given time instant $t_{n}$, $X_{n}$, is made up by the samples $X_{n}=\{x[0],x[1],x[2],...,x[i],...,x[n]\}$, where each sample…

Assignment Instructions: When a detection algorithm determines that a deadlock exists, the system must recover from the deadlock. The most common solution is to roll back one or more transactions to break the deadlock. List the three actions that need to be taken using figure 16.18 to discuss. (Silberschatz, Korth, & Sudarshan, 2001, p.618) A deadlock occurs when a sequence of transactions is waiting for access to data that is being held by a lock in another transaction in the same cycling…

MAC enforces a high system management overhead because of necessity of constant update object and levels of account to contain new data. It also requires changing the category of existing users and as well as new users frequently. In MAC model, the enforcement and assignment of security levels place restrictions on user that require large part of the operating system. Furthermore it is impossible to implement MLS using mandatory access control (MAC) because whole operating system and other…

service or system that it is used for. However, on the negative side it is a long and time-consuming method as it involves gathering large amounts of data from throughout the supply chain or purchasing expensive databases. Approximately it is taking between 3 and up to 12 months for determining full results. Also, it is individual for each product, service or system, therefore it does takes a time to figure out which one is the best solution for a related product, service or a system. Therefore,…

Step 9 monitors the database application systems and improves performance by making amendments to the design as appropriate. 16.2 What factors can be used to measure efficiency? There are a number of factors that we may use to measure efficiency: • Transaction throughput: this is the number of transactions processed in a given time interval. In some systems, such as airline reservations, high transaction throughput is critical to the overall success of the system. • Response time: this…

BA501 Overview of Business Intelligence Week 1 Assignment David Nagus Grantham University Professor Jackson May 6, 2015 I Introduction With any business with a database system there are bound to be changes and different metrics used in the decisions of running a business. These days almost all businesses have a computer system or network of computers that are interlinked. One aspect of a business is how they secure their network and who has access to data and who does not. On a almost…

Data-centric and process-centric integration are both parts of the integrated structure that Carrier has defined. He defined in 1999 that data-centric is the automation and integration of data, and those data can be exchanged between the information system. Process-centric, on the other hand, is more of involving data and applications together at all levels. Linthicum, Morgenthal and La Forge believes that process-centric integration is the highest level of integration for the business. They are…