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  2. Dimension (data warehouse) - Wikipedia

    en.wikipedia.org/wiki/Dimension_(data_warehouse)

    A time dimension with a grain of seconds in a day will only have 86400 rows. A more or less detailed grain for date/time dimensions can be chosen depending on needs. As examples, date dimensions can be accurate to year, quarter, month or day and time dimensions can be accurate to hours, minutes or seconds.

  3. System time - Wikipedia

    en.wikipedia.org/wiki/System_time

    In computer science and computer programming, system time represents a computer system's notion of the passage of time. In this sense, time also includes the passing of days on the calendar . System time is measured by a system clock , which is typically implemented as a simple count of the number of ticks that have transpired since some ...

  4. Java version history - Wikipedia

    en.wikipedia.org/wiki/Java_version_history

    JDK time-zone data upgraded to tzdata2020d (core-libs/java.time) JDK time-zone data upgraded to tzdata2020c (core-libs/java.time) US/Pacific-New Zone Name Removed as Part of tzdata2020b (core-libs/java.time) Bug fixes. 118 bug fixes [293] Java SE 11.0.11 [294] 2021-04-20 New features. jdeps --print-module-deps Reports Transitive Dependences ...

  5. Apache IoTDB - Wikipedia

    en.wikipedia.org/wiki/Apache_IoTDB

    Apache IoTDB is a column-oriented open-source, time-series database (TSDB) management system written in Java. [1] It has both edge and cloud versions, provides an optimized columnar file format for efficient time-series data storage, and TSDB with high ingestion rate, low latency queries and data analysis support.

  6. Lookup table - Wikipedia

    en.wikipedia.org/wiki/Lookup_table

    For data requests that fall between the table's samples, an interpolation algorithm can generate reasonable approximations by averaging nearby samples." [8] In data analysis applications, such as image processing, a lookup table (LUT) can be used to transform the input data into a more desirable output format. For example, a grayscale picture ...

  7. Memory footprint - Wikipedia

    en.wikipedia.org/wiki/Memory_footprint

    Memory footprint refers to the amount of main memory that a program uses or references while running. [1] The word footprint generally refers to the extent of physical dimensions that an object occupies, giving a sense of its size. In computing, the memory footprint of a software application indicates its runtime memory requirements, while the ...

  8. Early-arriving fact - Wikipedia

    en.wikipedia.org/wiki/Early-arriving_fact

    In the data warehouse practice of extract, transform, load (ETL), an early fact or early-arriving fact, [1] also known as late-arriving dimension or late-arriving data, [2] denotes the detection of a dimensional natural key during fact table source loading, prior to the assignment of a corresponding primary key or surrogate key in the dimension table.

  9. Real-time Java - Wikipedia

    en.wikipedia.org/wiki/Real-Time_Java

    Real-time Java is a catch-all term for a combination of technologies that enables programmers to write programs that meet the demands of real-time systems in the Java programming language. Java's sophisticated memory management , native support for threading and concurrency, type safety , and relative simplicity have created a demand for its ...