metadata shit

• Metadata


  Data that provides information about other data, such as creator, creation date, file type, and more.
• Metadata in Databases


  Enables efficient data storage, query optimization, data consistency, data discovery, and security management in databases.
• Physical vs. Logical Metadata

  Physical metadata concerns physical database structure, while logical metadata concerns logical database structure.
• Metadata in Data Integration

  Metadata facilitates data integration by providing information about data structures, relationships, and formats, enabling efficient data merging and transformation.
• Metadata-driven Data Quality


  Metadata ensures data quality by enforcing standards, validating data, and providing a record of data changes, enabling data cleanliness, accuracy, and consistency.
• Metadata-driven Data Profiling


  Metadata enables data profiling by providing information about data characteristics, relationships, sources, meaning, frequency, statistics, and visualization, facilitating data analysis and quality assessment.
• Data Characteristics


  Data characteristics are properties or attributes that describe the nature, behavior, and relationships of data, including quantitative, qualitative, temporal, spatial, and relationship characteristics.
• 5 Categories of Data Characteristics

  Data characteristics can be categorized into five categories: Quantitative, Qualitative, Temporal, Spatial, and Relationship characteristics.
• Quantitative Characteristics Examples


  Examples of quantitative characteristics include mean, median, mode, variance, standard deviation, length, precision, count, sum, and range.
• Purpose of Standard Deviation

  Standard deviation measures variability, identifies outliers, measures uncertainty, allows dataset comparison, and is used in statistical analysis and data modeling.
• SD in Quality Control


  Standard Deviation is used in quality control to set control limits, detect shifts, monitor process stability, determine acceptance criteria, determine lot size, and calculate process capability.
• SD in Control Limits

  Standard Deviation is used in control limits to calculate Upper and Lower Control Limits, detect Out-of-Control (OOC) conditions, specify tolerance limits, and adjust control limits.
• metadata shit