Idioms And Phrases
Idioms And Phrases where the words together have a meaning that is different from the dictionary definitions of the individual words
yash sharma
Geographical Information Systems (GIS)
Geographical Information Systems (GIS) *Introduction *Overview of GIS *History of GIS development *Product: ArcInfo Desktop 9.0 Functions of GIS General-purpose GIS software performs six major tasks such as input, manipulation, management, query and analysis, Visualization.
One word Substitution
One word Substitution List of One word Substitution for "Individual Character/person/people"
Mobile Databases
Mobile Databases Mobile computing devices (e.g., smartphones and PDAs) store and share data over a mobile network, or a database which is actually stored by the mobile device. This could be a list of contacts, price information, distance travelled, or any other information *Considerations Objectives At the end of this unit you should be able to: Define the term mobile computing Define the requirements of mobile databases Discuss the basic issues relating to mobile databases Define the basic applications of mobile databases * A Model of Mobile Computing
Commonly confused words
here is quick reference list of pair of words that regular cause people in problems. The words follow the accepted British English spelling
Deadlock and Starvation
Deadlock and Starvation Deadlock – two or more processes are waiting indefinitely for an event that can be caused by only one of the waiting processes Let S and Q be two semaphores initialized to 1 *Starvation – indefinite blocking *Priority Inversion *Avoidance Algorithms *Banker’s Algorithm
C-Array
An array is a collection of elements of the same type that are referenced by a common name. Compared to the basic data type (int, float & char) it is an aggregate or derived data type. All the elements of an array occupy a set of contiguous memory locations. and An array may be initialized at the time of declaration. Giving initial values to an array. Initialization of an array may take the following form,
DBMS-Active Database and Event-Condition-Action (ECA)
Active Databases Part 1: Introduction Triggers and rules are developed for data integrity and constraints * Triggers make “passive” database “active” * Database reacts to certain situations *Event Condition Action rule : ¨ on event insert/update/delete. Event-Condition-Action (ECA)
Pointers
Pointers A pointer is a reference to another variable (memory location) in a program Used to change variables inside a function (reference parameters) Used to remember a particular member of a group (such as an array) Used in dynamic (on-the-fly) memory allocation (especially of arrays) Used in building complex data structures (linked lists, stacks, queues, trees, etc.) *Outline *Pointer Basics *Pointer Variable Definition Address (&) Operator
The SQL UNION Operator
The SQL UNION Operator The UNION operator is used to combine the result-set of two or more SELECT statements. • Each SELECT statement within UNION must have the same number of columns • The columns must also have similar data types • The columns in each SELECT statement must also be in the same order UNION Syntax SELECT column_name(s) FROM table1 UNION SELECT column_name(s) FROM table2;
The SQL UPDATE Statement
The SQL UPDATE Statement The UPDATE statement is used to modify the existing records in a table. UPDATE Syntax UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the WHERE clause in the UPDATE statement. The WHERE clause specifies which record(s) that should be updated. If you omit the WHERE clause, all records in the table will be updated! ________________________________________
JavaScript Output
JavaScript Output JavaScript Display Possibilities JavaScript can "display" data in different ways: • Writing into an HTML element, using innerHTML. • Writing into the HTML output using document.write(). • Writing into an alert box, using window.alert(). • Writing into the browser console, using console.log(). ________________________________________