Search results
Results from the WOW.Com Content Network
Postgres-XL is based on Postgres-XC, an earlier distributed PostgreSQL system developed by NTT Data and EnterpriseDB. [4] In 2012, the cloud database startup StormDB [ 5 ] adopted Postgres-XC and developed some proprietary extensions and improvements to it. [ 6 ]
PL/pgSQL (Procedural Language/PostgreSQL) is a procedural programming language supported by the PostgreSQL ORDBMS. It closely resembles Oracle 's PL/SQL language. Implemented by Jan Wieck, PL/pgSQL first appeared with PostgreSQL 6.4, released on October 30, 1998. [ 1 ]
In situations where the number of unique values of a column is far less than the number of rows in the table, column-oriented storage allow significant savings in space through data compression. Columnar storage also allows fast execution of range queries (e.g., show all records where a particular column is between X and Y, or less than X.)
Data in child tables will appear to exist in the parent tables, unless data is selected from the parent table using the ONLY keyword, i.e. SELECT * FROM ONLY parent_table;. Adding a column in the parent table will cause that column to appear in the child table.
A table (called the referencing table) can refer to a column (or a group of columns) in another table (the referenced table) by using a foreign key. The referenced column(s) in the referenced table must be under a unique constraint, such as a primary key. Also, self-references are possible (not fully implemented in MS SQL Server though [5]).
Investment tactics often require big buy-ins and high fees. New tech is lowering the price of entry in fields like direct indexing and private markets. This article is part of "Transforming ...
Surprise the cookie fan in your life with one of these fun gift ideas! This gift guide includes bakeware, kitchen tools, cookbooks, and kits.
A spreadsheet program, similar to Microsoft Excel or Lotus 1-2-3. It has several unique features, including a system which automatically defines series of graphs, based on information available to the user. [clarification needed] [22] [23] Impress: A presentation program resembling Microsoft PowerPoint.