Here are eight ways to keep the black dog at bay after you turn back the clocks.â I checked definition of âkeep the black dog at bayâ on several online dictionaries. None of Cambridge, Oxford, Merriam-Webster, and even Urban dictionary registers this phrase. What does keep the black dog at bay mean? Keep something or somebody at bay means to prevent something or someone unpleasant from coming too near you or harming you. Black dog means a bad mood, characterized by anger, depression, or a mixture of the two.
This term has been defined in many ways, but along similar lines. Doug Laney, then an analyst at the META Group, first defined big data in a 2001 report called â3-D Data Management: Controlling Data Volume, Velocity and Variety.â Volume refers to the sheer size of the datasets. Velocity refers to the speed at which the data is acquired and used.
In addition to structured and unstructured data, there's also a third category: semi-structured data. Semi-structured data is information that doesn't reside in a relational database but that does have some organizational properties that make it easier to analyze.Examples of semi-structured data might include XML documents and NoSQL databases. The term big data is closely associated with unstructured data.nstructured Data and Big Data. As mentioned above, unstructured data is the opposite of structured data. Structured data generally resides in a relational database, and as a result, it is sometimes called relational data. This type of data can be easily mapped into pre-designed fields.