|
Data Build Tool
data build tool (dbt) is an open-source command line tool that helps analysts and engineers transform data in their warehouse more effectively. History It started at RJMetrics in 2016 as a solution to add basic transformation capabilities to Stitch (acquired by Talend in 2018). The earliest versions of dbt allowed analysts to contribute to the data transformation process following the best practices of software engineering. From the beginning, dbt was open source. In 2018, the dbt Labs team (then called Fishtown Analytics) released a commercial product on top of dbt Core. Funding In April 2020, dbt Labs announced its Series A led by Andreessen Horowitz. In November, dbt Labs announced its Series B led by Andreessen Horowitz and Sequoia. And in June 2021, dbt Labs raised its Series C led by Altimeter, Sequoia, and Andreessen Horowitz. In February 2022, the company raised $222 million for its Series D, at a $4.2 billion valuation Overview dbt enables analytics engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sequoia Capital
Sequoia Capital is an American venture capital firm. The firm is headquartered in Menlo Park, California, and specializes in seed stage, early stage, and growth stage investments in private companies across technology sectors. , Sequoia's total assets under management were approximately US$85 billion. Sequoia is an umbrella brand for three different venture entities: one focused on the U.S. and Europe, another on India and Southeast Asia, and a third on China. Notable successful investments by Sequoia Capital include Apple, Cisco, Google, Instagram, LinkedIn, PayPal, Reddit, Tumblr, WhatsApp, and Zoom. History Sequoia was founded by Don Valentine in 1972 in Menlo Park, California, at a time when the state’s venture capital industry was just beginning to develop. Sequoia formed its first venture capital fund in 1974, and was an early investor in Atari the next year. In 1978, Sequoia became one of the first investors in Apple. Partners Doug Leone and Michael Moritz assumed leade ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Warehousing
In computing, a data warehouse (DW or DWH), also known as an enterprise data warehouse (EDW), is a system used for reporting and data analysis and is considered a core component of business intelligence. DWs are central repositories of integrated data from one or more disparate sources. They store current and historical data in one single place that are used for creating analytical reports for workers throughout the enterprise. The data stored in the warehouse is uploaded from the operational systems (such as marketing or sales). The data may pass through an operational data store and may require data cleansing for additional operations to ensure data quality before it is used in the DW for reporting. Extract, transform, load (ETL) and extract, load, transform (ELT) are the two main approaches used to build a data warehouse system. ETL-based data warehousing The typical extract, transform, load (ETL)-based data warehouse uses staging, data integration, and access layers to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directory (computing)
In computing, a directory is a file system cataloging structure which contains references to other computer files, and possibly other directories. On many computers, directories are known as folders, or drawers, analogous to a workbench or the traditional office filing cabinet. The name derives from books like a telephone directory that lists the phone numbers of all the people living in a certain area. Files are organized by storing related files in the same directory. In a hierarchical file system (that is, one in which files and directories are organized in a manner that resembles a tree), a directory contained inside another directory is called a subdirectory. The terms parent and child are often used to describe the relationship between a subdirectory and the directory in which it is cataloged, the latter being the parent. The top-most directory in such a filesystem, which does not have a parent of its own, is called the root directory. Overview Historically, and even on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comma Separated Values
A comma-separated values (CSV) file is a delimited text file that uses a comma to separate values. Each line of the file is a data record. Each record consists of one or more fields, separated by commas. The use of the comma as a field separator is the source of the name for this file format. A CSV file typically stores tabular data (numbers and text) in plain text, in which case each line will have the same number of fields. The CSV file format is not fully standardized. Separating fields with commas is the foundation, but commas in the data or embedded line breaks have to be handled specially. Some implementations disallow such content while others surround the field with quotation marks, which yet again creates the need for escaping if quotation marks are present in the data. The term "CSV" also denotes several closely-related delimiter-separated formats that use other field delimiters such as semicolons. These include tab-separated values and space-separated values. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lookup Table
In computer science, a lookup table (LUT) is an array that replaces runtime computation with a simpler array indexing operation. The process is termed as "direct addressing" and LUTs differ from hash tables in a way that, to retrieve a value v with key k, a hash table would store the value v in the slot h(k) where h is a hash function i.e. k is used to compute the slot, while in the case of LUT, the value v is stored in slot k, thus directly addressable. The savings in processing time can be significant, because retrieving a value from memory is often faster than carrying out an "expensive" computation or input/output operation. The tables may be precalculated and stored in static program storage, calculated (or "pre-fetched") as part of a program's initialization phase ( memoization), or even stored in hardware in application-specific platforms. Lookup tables are also used extensively to validate input values by matching against a list of valid (or invalid) items in an array and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of ISO 3166 Country Codes
The International Organization for Standardization (ISO) created and maintains the ISO 3166 standard – ''Codes for the representation of names of countries and their subdivisions''. The ISO 3166 standard contains three parts: * ISO 3166-1 – ''Codes for the representation of names of countries and their subdivisions – Part 1: Country codes'' defines codes for the names of countries, dependent territories, and special areas of geographical interest. It defines three sets of country codes: ** ISO 3166-1 alpha-2 – two-letter country codes which are also used to create the ISO 3166-2 country subdivision codes and the Internet country code top-level domains. ** ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes. ** ISO 3166-1 numeric – three-digit country codes which are identical to those developed and maintained by the United Nations Statistics Division, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reference Table
A reference table (or table of reference) may mean a set of references that an author may have cited or gained inspiration from whilst writing an article, similar to a bibliography. It can also mean an information table that is used as a quick and easy reference for things that are difficult to remember such as comparing imperial with metric measurements. This kind of data is known as reference data. In the context of database design a reference table is a table into which an enumerated set of possible values of a certain field data type is divested. It is also called a domain table because it represents the domain for the columns that reference it. For example, in a relational database model of a warehouse the entity 'Item' may have a field called 'status' with a predefined set of values such as 'sold', 'reserved', 'out of stock'. In a purely designed database these values would be divested into an extra entity or Reference Table called 'status' in order to achieve database nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extract, Load, Transform
Extract, load, transform (ELT) is an alternative to extract, transform, load (ETL) used with data lake implementations. In contrast to ETL, in ELT models the data is not transformed on entry to the data lake, but stored in its original raw format. This enables faster loading times. However, ELT requires sufficient processing power within the data processing engine to carry out the transformation on demand, to return the results in a timely manner. Since the data is not processed on entry to the data lake, the query and schema do not need to be defined a priori (although often the schema will be available during load since many data sources are extracts from databases or similar structured data systems and hence have an associated schema). ELT is a data pipeline model. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altimeter Capital
Altimeter Capital is an American investment firm based in Boston, Massachusetts and Menlo Park, California. The firm focuses on technology investments in both public and private markets globally. Background In 2008, Brad Gerstner founded Altimeter Capital in Boston, Massachusetts. It was launched with less than $3 million from Gerstner's friends and family during the financial crisis of 2008. Prior to that, Gerstner worked at PAR Capital Management as well as General Catalyst. A month after the launch of Altimeter Capital, an office was opened in Menlo Park, California. In 2013, Altimeter Capital closed its first venture capital fund at $75 million. In September 2020, Altimeter Growth Corp was listed on the Nasdaq (Ticker: AGC) raising $450 million. AGC is a SPAC which is a blank-check company. In April 2021 it was announced that AGC would merge with Singapore ridesharing company, Grab to help it list on Nasdaq under the ticker, GRAB. In January 2021, a second SPAC, Alt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andreessen Horowitz
Andreessen Horowitz (also called a16z, legal name AH Capital Management, LLC) is a private American venture capital firm, founded in 2009 by Marc Andreessen and Ben Horowitz. The company is headquartered in Menlo Park, California. Andreessen Horowitz invests in both early-stage start-ups and established growth companies. Its investments span the mobile, cryptocurrency, gaming, social, e-commerce, education and enterprise IT (including cloud computing, security, and software as a service) industries. Founding and partnering Between 2006 and 2010, Marc Andreessen and Ben Horowitz actively invested in technology companies. Separately, and together, they invested $4 million in 45 start-ups including Twitter. During this time, the two became known as "super angel" investors. On July 6, 2009, Andreessen and Horowitz launched their venture capital fund with an initial capitalization of $300 million. In November 2010, at a time when the field of venture capitalism was contracting, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Windows
Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for servers, and Windows IoT for embedded systems. Defunct Windows families include Windows 9x, Windows Mobile, and Windows Phone. The first version of Windows was released on November 20, 1985, as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs). Windows is the most popular desktop operating system in the world, with 75% market share , according to StatCounter. However, Windows is not the most used operating system when including both mobile and desktop OSes, due to Android's massive growth. , the most recent version of Windows is Windows 11 for consumer PCs and tablets, Windows 11 Enterprise for corporations, and Windows Server 2022 for servers. Genealogy By marketing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Microsoft Windows"){kind=logo}