Most of the journals have guidelines regarding publications of manuscript from a single data set. Some common guidelines include: a) if the paper is based on a previous data set, it should be acknowledged and notified to the journal editor, b) the second manuscript should present a different perspective on the topic of interest, c) if it is secondary data analysis permission should be obtained to reuse the data for a different research purpose. Having said that, if you conducted a mixed methods study, you can publish several papers using the same data. For example, one paper could be a methodological paper, second could be a complete mixed methods study, third could be a quantitative or qualitative manuscript (given that there is enough data to write a complete study). In all of these cases, if you acknowledge previous papers and refrain from text overlapping and recycling, it would not be counted as self-plagiarism.
Md. Jobayer - Yes, it is possible to use the data presented in one published article into another but there is a limit. There is possibility to use up to 5% data from a single source. Other possible ways are:
1. Acknowledge the contributions of other/s and the source of his/her ideas. It is very important to give credit to the original author and enclose that information in quotations and to indicate the specific source of that text including reference citation and page number.
2. Bad paraphrasing or patch writing must be avoided and deleting some words/phrases or inserting synonyms in original work is plagiarism without giving credit to original author. Inappropriate paraphrasing is perhaps the most common form of plagiarism and, at the same time, the most controversial.
3. While paraphrasing others’ work, it is essential to give proper credit and provide the proper citation. The significance lies in the fact that in good paraphrasing although the structure of sentence does change but the essence still remains the same.
4. Understand properly the word, sentence or paragraph of the original text and the meaning both manifest and implied in it before paraphrasing it so that it becomes easier to change, alter or reframe the text.
5. What cannot be paraphrased properly it is good to put that in quotation marks with reference to original author (e.g., foot note or endnote) and thus maintain the proper citation.
6. Generally, the short quotes taken from published work does not require permission from copy right holder as it comes under the provision of ‘fair use’ but large quotes require proper permission from copy right owner.
Linas - I am not talking about "salami slicing". Salami slicing is a series of many small actions, often performed by clandestine means, that as an accumulated whole produces a much larger action or result that would be difficult or unlawful to perform all at once. Although "Salami slicing", is a variant of the smallest-publishable-unit strategy yet I am trying to say how we can use the data presented in one published article into another within the rules of allowed plagiarism policy.