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2. SQL - Wikipedia

   en.wikipedia.org/wiki/SQL

   SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...

3. Database object - Wikipedia

   en.wikipedia.org/wiki/Database_object

   Application- or user-specific database objects in relational databases are usually created with data definition language (DDL) commands, which in SQL for example can be CREATE, ALTER and DROP. [4] [5] Rows or tuples from the database can represent objects in the sense of object-oriented programming, but are not considered database objects. [6]

4. Query language - Wikipedia

   en.wikipedia.org/wiki/Query_language

   SQL is a well known query language and data manipulation language for relational databases; XQuery is a query language for XML data sources; XPath is a declarative language for navigating XML documents; YQL is an SQL-like query language created by Yahoo! Search engine query languages, e.g., as used by Google [5] or Bing [6]

5. SQL syntax - Wikipedia

   en.wikipedia.org/wiki/SQL_syntax

   This is an important element of SQL. Statements, which may have a persistent effect on schemata and data, or may control transactions, program flow, connections, sessions, or diagnostics. SQL statements also include the semicolon (";") statement terminator. Though not required on every platform, it is defined as a standard part of the SQL grammar.

6. Relational model - Wikipedia

   en.wikipedia.org/wiki/Relational_model

   The current ISO SQL standard doesn't mention the relational model or use relational terms or concepts. [citation needed] According to the relational model, a Relation's attributes and tuples are mathematical sets, meaning they are unordered and unique. In a SQL table, neither rows nor columns are proper sets.

7. Data query language - Wikipedia

   en.wikipedia.org/wiki/Data_query_language

   Data query language (DQL) is part of the base grouping of SQL sub-languages. These sub-languages are mainly categorized into four categories: a data query language (DQL), a data definition language (DDL), a data control language (DCL), and a data manipulation language (DML).

8. Telltale Signs You Need to See a Doctor for Your Cough - AOL

   www.aol.com/telltale-signs-see-doctor-cough...

   It's also important to contact a doctor if your cough was getting better and then got worse—this can be a sign of a secondary infection, Dr. Youssef says. Home remedies for a cough.

9. Select (SQL) - Wikipedia

   en.wikipedia.org/wiki/Select_(SQL)

   SQL includes operators and functions for calculating values on stored values. SQL allows the use of expressions in the select list to project data, as in the following example, which returns a list of books that cost more than 100.00 with an additional sales_tax column containing a sales tax figure calculated at 6% of the price.