SQL | Computer Science

Mar 17, 2017Download as PPTX, PDF1 like689 views

Structured Query Language (SQL) is a computer language which is used for managing and manipulating data in relational databases. SQL helps the application to communicate with the database. Copy the link given below and paste it in new browser window to get more information on SQL:- www.transtutors.com/homework-help/computer-science/sql.aspx

SQL is a query language which is used
by the developers to query and manipulate
data held by Relational Database
Management System(RDBMS).
SQL uses keywords and operators to create
queries.

1. SQL Language Elements : Includes Clauses, Expressions,
Predicates, Queries and Statements.
2. SQL operators: Includes arithmetic operators(+,-,…);
Comparison operators(<,>,….); Logical operators (ALL,
BETWEEN, ….) and negation.
3. SQL keywords: Includes SELECT, FROM etc which creates an
SQL query.

SELECT MONTH, ID, RAIN_I, TEMP_F
FROM STATS
ORDER BY MONTH, RAIN_I DESC;
This query will select all rows with columns MONTH, ID, RAIN_I,
TEMP_F from the SQL table STATS and then order the rows on the basis
of month and rainfall in descending order.

Initially know as SEQUEL, SQL was created at IBM by Donald D.
Chamberlin and Raymond F. Boyce in early 1970’s.
SEQUEL was created to fetch data from IBM’S quasi-relational
database.
SQL appeared in 1974 and its first mainstream application
appeared in 1979.

SQL server is RDBMS from Microsoft.
SQL Server works on T-SQL, a series of programming
extensions from Sybase and Microsoft.

Hey Friend,
This was just a summary on SQL. For more detailed information
on this topic, please type the link given below or copy it from
the description of this PPT and open it in a new browser
window.
www.transtutors.com/homework-help/computer-science/sql.aspx

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If two or more than two forces are acting on a single plane then the forces are known as System of Coplanar Forces and if they are acting on different planes then the forces are called as Non-Coplanar Forces. Copy the link given below and paste it in new browser window to get more information on Resultant of Coplanar Parallel Forces:- http://www.transtutors.com/homework-help/mechanical-engineering/force-systems-and-analysis/resultant-of-coplanar-parallel-forces.aspx

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The force of attraction exerted by the earth on a solid body is known as Gravitational Force. It acts in a vertically downward direction and is known as weight of the body. Thus, the weight of the body is assumed to act at a point which is known as Centre of Gravity of a body. Copy the link given below and paste it in new browser window to get more information on The Centroidal Axis:- http://www.transtutors.com/homework-help/mechanical-engineering/bending-stress/moment-of-inertia-about-the-centroidal-axis1.aspx

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A force is a physical quantity that tends to change the behavior of a solid body when applied upon. This change in behavior may be change in shape of the body or motion of the body in the direction of its action. The force is a vector quantity since it has magnitude and direction. Copy the link given below and paste it in new browser window to get more information on System Of Coplanar Forces:- http://www.transtutors.com/homework-help/mechanical-engineering/force-systems-and-analysis/system-of-coplanar-forces.aspx

Resultant of Two Unlike and Unequal Parallel Forces | Mechanical EngineeringTransweb Global Inc

A force is an external agent which changes or tends to change the behavior of any solid body. It is a vector quantity since it is designated with magnitude and direction. The forces may be of tensile or compressive in nature. Copy the link given below and paste it in new browser window to get more information on Resultant of Two Unlike and Unequal Parallel Forces:- http://www.transtutors.com/homework-help/mechanical-engineering/force-systems-and-analysis/resultant-of-two-unlike-and-unequal-parallel-forces.aspx

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Beam is a structural member whose lateral dimensions are much smaller than the longitudinal dimension and used to carry loads perpendicular to the longitudinal axis. The beams are generally used in buildings, bridges, trusses, etc., Copy the link given below and paste it in new browser window to get more information on SFD Load Diagram Examples:- http://www.transtutors.com/homework-help/mechanical-engineering/bending-moment-and-shear-force/sfd-load-diagram-examples.aspx

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A force is an external agent acting on another body. This force may moves or tends to move the body in the direction of its action. The force is a vector quantity since it is represented by its magnitude and direction. The force may be of pulling or pushing type. Copy the link given below and paste it in new browser window to get more information on Principle Of Transmissibility:- http://www.transtutors.com/homework-help/mechanical-engineering/force-systems-and-analysis/principle-of-transmissibility.aspx

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The Ranked Positional Weight Method is a technique used for assembly line balancing that takes into account precedence relationships and task processing times. It involves calculating a Ranked Positional Weight for each work element based on duration and precedence, arranging them in descending order, and then assigning them to workstations to optimize time, machinery, labor and output. The example shows the steps of constructing a precedence diagram, calculating RPW values, ordering by RPW, and assigning elements to six workstations with the goal of minimizing idle time.

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In today’s competitive world the term Speed to Market plays an important role for everyone. So, Speed to Market means the pace of introducing any change, innovation, creativity, any market practice for the purpose of increasing the Promotion of the product as quickly as possible in the market. Copy the link given below and paste it in new browser window to get more information on Speed To Market:- http://www.transtutors.com/homework-help/industrial-management/product-development/speed-to-market.aspx

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The document discusses the concept of managerial hubris, which refers to excessive pride or self-confidence held by senior managers that can lead to cognitive biases and poor decision making. Managerial hubris can result in empire building within an organization as managers seek to expand their power and influence. It is also related to mergers and acquisitions if acquiring company managers overestimate their ability to manage target companies. This can lead to winners' curse, where the winning bid exceeds the true value of the target. The hubris hypothesis suggests managerial hubris in acquisitions can result in bids over the intrinsic value and ultimately lower shareholder returns.

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Digital Electronics circuits are those which operate with digital signals. These are discrete signals which are sampled from analog signal. Digital circuits use binary notation for transmission of signal. Copy the link given below and paste it in new browser window to get more information on Advantages and Disadvantages of Digital Electronics:- http://www.transtutors.com/homework-help/electrical-engineering/digital-electronics/advantages-disadvantages/

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Curves are of different types and for different purposes. Some of the curves are utility curve, margin curves, demand and supply curve, offer curves, etc. International trade is based on international specialization. Copy the link given below and paste it in new browser window to get more information on Offer Curves:- http://www.transtutors.com/homework-help/international-economics/analytical-tools/offer-curves.aspx

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Currency is any form of money in general circulation in a country. Foreign exchange is money denominated in the currency of another country or a group of countries. Simply, an exchange rate is defined as the rate at which the market converts one currency into another. Copy the link given below and paste it in new browser window to get more information on Fixed Exchange Rate:- http://www.transtutors.com/homework-help/international-economics/economic-policy-in-open-economy/fixed-exchange-rate/

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1. Structured Query Language

2. SQL is a query language which is used by the developers to query and manipulate data held by Relational Database Management System(RDBMS). SQL uses keywords and operators to create queries.

3. 1. SQL Language Elements : Includes Clauses, Expressions, Predicates, Queries and Statements. 2. SQL operators: Includes arithmetic operators(+,-,…); Comparison operators(<,>,….); Logical operators (ALL, BETWEEN, ….) and negation. 3. SQL keywords: Includes SELECT, FROM etc which creates an SQL query.

4. SELECT MONTH, ID, RAIN_I, TEMP_F FROM STATS ORDER BY MONTH, RAIN_I DESC; This query will select all rows with columns MONTH, ID, RAIN_I, TEMP_F from the SQL table STATS and then order the rows on the basis of month and rainfall in descending order.

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6. SQL server is RDBMS from Microsoft. SQL Server works on T-SQL, a series of programming extensions from Sybase and Microsoft.

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