The primary advantages of using data files include easy storage and retrieval of large amounts of data, improved data organization and structure, and increased data security and protection.
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that it can save time and resources that would otherwise be spent collecting new data. Additionally, existing data may provide a larger sample size, increasing the reliability of the results. Lastly, using existing data allows for historical comparisons and trend analysis.
The victim is less likely to aggravate existing injuries
It Is Easier To Read
they help keep records of data
Advantages of using a database include efficient data organization, easy data retrieval, and data security. However, disadvantages can include high initial setup costs, potential for data redundancy, and complexity of managing and maintaining the database system.
No, data can be collected through various methods beyond experiments. Observational studies, surveys, interviews, and existing records are alternative approaches to gather data. Each method has its advantages and limitations, and the choice depends on the research question, context, and available resources. Using a combination of methods can often provide a more comprehensive understanding of a phenomenon.
1. We can retrieve the data from tables using less number of joins. 2. The data is more centralized.
"...advantages and disadvantages of existing system" Main disadvantage? If all you are doing is existing, you really need to get a life! Main advantage? If you are merely existing, you are physically alive, which usually means you have a chance to get a life.
Common data sources used for sociological research include census data, surveys, existing databases, and interviews. Researchers may also use social media, historical records, and observational studies to gather data for their studies. Each data source has its advantages and limitations, which researchers consider when designing their studies.
The advantages concern security and access, among other things. You can control who has access to your data. Secondly, using a LAN means you don't have to physically transfer the data between systems; it is done electronically.