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Showing posts from April, 2014

🌿 Smart Garden Manager in C++ with Robotics, UI, Drones, and Sound "A Rainwater Conservation System for Tomorrow’s Farms"

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  🌿  Smart Garden Manager in C++ with Robotics, UI, Drones, and Sound "A Rainwater Conservation System for Tomorrow’s Farms" 🧭  1. Introduction: Farming in the Age of Climate Change In a world where clean water is more precious than gold, efficient  rainwater harvesting and plant care systems  are no longer optional — they’re essential. Smart farming doesn’t mean just automating irrigation. It means combining  robotic drones, environmental sensors, and intelligent scheduling  to build a garden that practically takes care of itself. In this guide, we build a  fully functional Garden Manager System  using  C++  that: Captures and conserves rainwater Uses  robotic drones and sensors  to monitor crop health Integrates a  real-time UI  with progress bars and alerts Includes  timers  for scheduling plant growth and drone tasks Plays  interactive sounds  based on crop state and events Whether you'r...
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oracle dba: SQL statements

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oracle dba: SQL statements : SQL statements supported by oracle comply with industry standards DML DDL DCL   Transaction control  DML select insert update ...
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SQL statements

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SQL statements supported by oracle comply with industry standards DML DDL DCL   Transaction control  DML select insert update delete merge DDL create alter drop rename truncate comment DCL grant revoke Transaction control commit rollback savepoint
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oracle dba: Using SQL to query your database

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oracle dba: Using SQL to query your database : In relational database you do not need to specify the access route to the tables ,and you do not need to know how the data is arranged phys...
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Using SQL to query your database

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In relational database you do not need to specify the access route to the tables ,and you do not need to know how the data is arranged physically.SQL is ANSI standard language for operating relational database .It is a set of  statements in which all programs and users access data in oracle db. SQL provides statements for a variety of tasks ,such as, Querying data Inserting,updating and deleting rows in a table Creating, replacing ,altering and dropping objects Controlling access to db  Guaranteeing db integrity
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oracle dba: Oracle............Relating multiple tables

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oracle dba: Oracle............Relating multiple tables : Each table  contains data that describes exactly one entity,e.g  the EMPLOYEES  table  contains  information about employees .By using a ...
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Oracle............Relating multiple tables

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Each table  contains data that describes exactly one entity,e.g  the EMPLOYEES  table  contains  information about employees .By using a table format  ,you can readily understand and use information.Because data about different entities is stored in different tables ,you need to combine two or more tables ,to answer a particular question ,e.g you may want to know the location of the department where an employee works.In this scenario ,you need info from EMPLOYEES   table and the DEPARTMENTS table . With an RDBMS  you can relate data in one table to the data in another by using foreign keys. A foreign key is a column  that refers to a primary  key in the same table or another table .Each row of data in a table is uniquely identified by a primary key. You can logically relate data from multiple tables using foreign keys.
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