The success of the database and data warehouse (DW) project really depends on the quality of data. If data quality is not good enough, the information will logically be unreliable when the business users retrieve it from the database/DW environment. Good quality of data will be useful for the decision maker to make the right decision, gain more trust and make the organization more efficient. In contrast, the bad quality of data will drive the decision maker to make a wrong decision. Debbarma, Nath and Das (2013) stated that “good quality of data will enable DW environment to provide right information in the right place at the right time with the right cost in order to support the right decision”. Thus, data quality needs to be maintained …show more content…
The most prominent issue that always occurs is duplicated records “the records that represent the same real-world object in numerous ways” (Christie, Timothy, 2005). Such duplicates could cause many significant problems. Therefore, data cleaning strategy is essential to ensure these redundancies. However, duplicate elimination is one of challenge tasks because it is caused by many different types of errors such as typographical errors, null values, abbreviations, word transformation and different representations of the same word. To detect and eliminate data duplication, there are many algorithms that have been proposed by researchers and scholars. Those algorithms include standard duplication elimination algorithm (SDE), adaptive duplication detection algorithm (ADD), sorted neighborhood algorithm (SNA), duplicate elimination sorted neighborhood algorithm (DE-SNA), etc. Most of the algorithms use the following techniques in different ways to achieve a duplicate detection and elimination goal: Character-based similarity measure techniques. Phonetic similarity measure techniques Numeric similarity measure techniques Semantic similarity measure techniques To measure the similarity between characters, numbers and semantic words, the above techniques use standard string similarity functions such as edit distance, generalized edit distance, hamming distant, cosine metric, and Jaccard coefficient function, etc. There are many approaches
Technology: Technology can single handedly improve a data reporting system if applied properly . It can solve problems like a lack of standardization, electrical power and backup of the system. Using standalone databases without deploying standard enterprise databases that aligned data as the occur checking for accuracy and quality issues in real-time
Data management is vital to any business as this is a key tool to an organisations business improvement, as you can refer back to data, and compare them against benchmarks. Analysing data can provide evidence for possible future structure such as identify trends, as well as indicate where improvements can be made. However there are strict procedures to be followed when collecting and storing data.
Abstract: Data Quality mostly mention about the quality of the data. Mainly the data considers to be of high quality. This research paper explains about how the Data Quality has the control over the large observation data which has brought many challenges to researchers. It also explains about how Data Quality Monitors data through the user defined algorithms and gives the analysis how the data is being processed. It clearly describes about the six features which ensure strategy planning for the data quality.
Data is very important thing in every business, especially in today’s dynamic world where optimal use of data leads to success in shorter span of time as lots of companies are struggling for truthful and accurate data. These data must be analyzed in exact time and in a proper way so that the decision is more effective, but the data we receive are very redundant and carry lot of space in our system. This creates a challenge for the Analytics people to remove the redundancy and bring out only those relevant data that aids in decision making process. Master Data Management is a solution for such Analyst who wants to eliminate the redundant and inconsistent data of the organization (Vinculum, 2016).
In order to reach his goal, there are many issues that need to be addressed. The first issue is that in order to ensure that the data in the data warehouse is correct, there needs to be strong data governance by all users. The 2nd concern is that users of the current systems will not
What information is accessible? The data warehouse offers possibilities to define what’s offered through metadata, published information, and parameterized analytic applications. Is the data of high value? Data warehouse patrons assume reliability and value. The presentation area’s data must be correctly organized and harmless to consume. In terms of design, the presentation area would be planned for the luxury of its consumers. It must be planned based on the preferences articulated by the data warehouse diners, not the staging supervisors. Service is also serious in the data warehouse. Data must be transported, as ordered, promptly in a technique that is pleasing to the business handler or reporting/delivery application designer. Lastly, cost is a feature for the data
Data warehouse has different concepts of data. Each concept is divided into a specific data mart. Data mart deals with specific concept of data, data mart is considered as a subset of data warehouse. In Indiana University traditional data warehouse is unable to create large data storage. Further it shows any errors and imposed rules on data. The early binding method is disadvantage. It process longer time to get enterprise data warehouse (EDW) to initiate and running. We need to design our total EDW, from every business rule through outset. The late binding architecture is most flexible to bind data to business rules in data modeling through processing. Health catalyst late binding is flexible and raw data is available in data warehouse. It process result by 90 days and stores IU data without any errors.
Next to the type of information provided from a properly designed and built data system, the integrity of the data supporting that information is the most critical result. Data integrity speaks to the comprehensive accuracy, and consistency of the data, with the foundational aspect being its reliability. In business this is crucial, as key decisions are made daily, by all levels of management, based on database system outputs.
This combined methodology presents measure of semantic similarity where request for both predefined human labels achieved from previous resolution and implementations. Probabilistic model as similarity on a data set formulated by LDA and BM25 and is implemented by python and java to push data. Our results shown that while labeling is ambiguous, using K-means with several clusters guide for better category cleaning, otherwise logistic functionality lead user to better selection. These methods make our system transparent, consistent by labels and a simple used
Be it validating the data of a medical device or a database or an instrument, assuring data completeness and accuracy is not just pertained to individual components. It is more to do with managing the entire lifecycle of enterprise-data of an organization and ensuring data integrity throughout the IT systems. So is the case with SharePoint®.
A data warehouse is a large databased organized for reporting. It preserves history, integrates data from multiple sources, and is typically not updated in real time. The key components of data warehousing is the ability to access data of the operational systems, data staging area, data presentation area, and data access tools (HIMSS, 2009). The goal of the data warehouse platform is to improve the decision-making for clinical, financial, and operational purposes.
Before a data set can be mined, it first has to be ?cleaned?. This cleaning process removes errors, ensures consistency and takes missing values into account. Next, computer algorithms are used to ?mine? the clean data looking for unusual patterns. Finally, the patterns are interpreted to produce new knowledge.3
The make-or-buy analysis is heavily depending on the accuracy of the company’s database. Therefore, I need to make sure that I have maintained the database and updated the information correctly. Moreover, I also need to perform several analysis from numerous files in the database and required the ability to analyze a huge amount of data effectively and in a timely manner.
The data warehouse comes ready for use, but an organization has to get prepared to use it. The main factor is data warehouse usage. A data warehouse can be used for decision making for management staff.
Data warehouse are multiple databases that work together. In other words, data warehouse integrates data from other databases. This will provide a better understanding to the data. Its primary goal is not to just store data, but to enhance the business, in this case, higher education institute, a means to make decisions that can influence their success. This is accomplished, by the data warehouse providing architecture and tools which organizes and understands the