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Additionally, if your email isn't missing, but going straight to an unexpected folder, it may the normal outcome of using IMAP to access your mail. IMAP syncs your email regardless of where you use it, which means emails will be sorted based on the client's specifications. Check to see if your account been deactivated for inactivity
A non-primary key that can be used to identify only one row in a table. Alternate keys may be used like a primary key in a single-table select. Foreign. A key that has migrated to another entity. At the most basic definition, "a key is a unique identifier", [1] so unique key is a pleonasm.
Distributed database. A distributed database is a database in which data is stored across different physical locations. [1] It may be stored in multiple computers located in the same physical location (e.g. a data centre); or maybe dispersed over a network of interconnected computers. Unlike parallel systems, in which the processors are tightly ...
Star schema used by example query. Consider a database of sales, perhaps from a store chain, classified by date, store and product. The image of the schema to the right is a star schema version of the sample schema provided in the snowflake schema article.
Take control of your inbox by keeping your spam list up to date. 1. Click the Block Senders tab. 2. In the box under "Block mail from addresses I specify," enter the email address you want blocked. 3. Click the + icon 4. Alternatively, to remove the address, click the X icon next to the address you want removed.
First normal form ( 1NF) is a property of a relation in a relational database. A relation is in first normal form if and only if no attribute domain has relations as elements. [1] Or more informally, that no table column can have tables as values. Database normalization is the process of representing a database in terms of relations in standard ...
Set operations (SQL) Set operations in SQL is a type of operations which allow the results of multiple queries to be combined into a single result set. [1] Set operators in SQL include UNION, INTERSECT, and EXCEPT, which mathematically correspond to the concepts of union, intersection and set difference .
Unnormalized form. In database normalization, unnormalized form ( UNF or 0NF ), also known as an unnormalized relation or non-first normal form (N1NF or NF 2 ), [1] is a database data model (organization of data in a database) which does not meet any of the conditions of database normalization defined by the relational model.