CBSE Class 12 - Computer Science - SQL Commands and Functions - Summary(#cbsenotes)(#eduvictors)

SQL Commands and Functions 

Summary

SQL (Structured Query Language) is a standardized language used to create, maintain, modify, and query relational databases. When a user wants to get some information from a database file, he can issue a SQL query.

Types of SQL commands OR Processing capabilities of SQL:
① Data Definition Language Commands (DDL Commands)
② Data Manipulation Language Command (DML Commands)
③ Transaction Control Language Command (TCL commands)
④ Data Control Language (DCL Commands)


DDL Commands
All the commands used to create, modify or delete physical structure of an object like a table. e.g., Create, Alter, Drop.

DML Commands
DML contains commands that can be used to manipulate the database objects and to query the databases for information retrieval.
e.g Select, Insert, Delete, Update etc.

TCL commands
TCL include commands to control the transactions in a database system. The commonly used commands in TCL are COMMIT, ROLLBACK etc.

Data Control Language (DCL)
This language is used for controlling the access to the data. Various commands like GRANT, REVOKE etc are available in DCL.

Science Quiz for CBSE Class 8 Students (#cbsenotes)(#eduvictors)

Science Quiz for CBSE Class 8 Students

Science plays a crucial role in setting the progressive path of our society. It is one way of knowing about the world. Science is a seamless web of knowledge. It is the search for truth and knowledge. Scientists suggest explanations of why things are as they are, and then they test those explanations, using experiments.

Multiple Choice Questions (MCQs) are by and large perceived as the most broadly material and helpful ways assess your knowledge. They could be utilized to quantify the most vital instructive results - information, comprehension, judgment and critical thinking.

The scope of science stretches far and wide. The best time to educate students in scientific approach and critical thinking is by making sure that the curriculum is created keeping this vision in mind. NCERT Books are specially designed keeping such objectives in mind.

Based on Class 8 Science NCERT book, follwoing are the MCQs available to help students learn their lessons and assess their knowledge.

CBSE Class 10 - All Subjects Sample Question Papers (2018-19) (#cbsepapers)(#eduvictors)

CBSE Class 10 -
 Sample Question Papers (2018-19)

All Subjects

The Central Board of Secondary Education (CBSE) conducts Class 10 Board examinations every year in March. All examination questions depend on this prospectus so students should know about any updates that are made by NCERT. For the examinations, students can likewise download the CBSE board test papers for class 10 free PDF download and work on taking care of issues with us.

By solving the CBSE test papers for class 10, candidates will figure out how to distinguish question paper examples and patterns, answer necessities, kinds of trap questions and the sky is the limit from there. Students are urged to endeavor test question papers inside the predefined time limit. The papers empower them  to find the correct technique and answers for ordinarily made questions. They are urged to solve the problems within the recommended time with the goal that they may assess their regions of solidarity and focus on those they are feeble in.

To endeavor board exam understudies require a great deal of training as ridicule tests and test papers that will plan and empower them to compose the Class 10 CBSE Board Examination with certainty. Since it is the main board exam a kid shows up for there is frequently a great deal of fear included. Explaining these example papers supports certainty and mitigates the dread of board examinations that a great deal of students have.

Here are sample question papers on various subjects for class 10 (session: 2018-19) along with answers and marking schemes:

CBSE Class 9 - Biology - Classification of Living Beings By Biologists (#cbsenotes)(#eduvictors)

Classification of Living Beings By Biologists 

From 16th century, various biologists attempted to classify various organisms but didn't realize the evolutionary relationships. In 1758 Carl Linnaeus proposed a system that has dominated classification for centuries. Linnaeus identified two kingdoms: Animalia (animals) and Plantae

(plants). 

All the terms like species, genus, family, order, class, phyla etc were defined by Linnaeus on the

basis of the similarities and differences studied by him in groups of organisms.

The first major break from the Linnaean model came from Thomas Whittaker. In 1969 Whittaker proposed a "five kingdom" system in which three kingdoms were added to the animals and plants: Monera (bacteria), Protista, and Fungi.

CBSE Class 12 - Economics - Chapter 5: Supply (60+ Very Short Questions Answers) (#cbsenotes)(#eduvictors)

Economics: Supply 

(Very Short Questions Answers)

Q1: Define supply.

Answer: Supply may be defined as the amount of a commodity that the producers are willing to offer for sale at different prices during a period of time.

Q2: Define stock.

Answer: It refers to the total quantity of goods which is available with the sellers in the market at a particular point of time.


Q3: Name three elements of supply.

Answer:
(i) Quantity of a commodity
(ii) Price of a commodity
(iii) Particular time period


Q4: What is Supply Schedule? 

Answer: It is a tabular statement which shows various quantities of a commodity being supplied at various levels of price, during a given period of time.


Q5:  What does supply indicate?

Answer:  Supply indicates a firm’s willingness to sell at a particular price and time.


Q6: What is Market Supply Schedule?

Answer: It is a schedule which represents the total quantity of a commodity that all producers will supply at each market price per period of time. It is a horizontal summation of individual supply schedules.


Q7: How is supply different from stock?

Answer:  Supply is a part of the stock.

CBSE Class 10 - FIT - Chapter 3: Office Tools - Database Concepts (Q & A) (#cbsenotes)(#eduvictors)

Database Concepts 

Class 10 - FIT - Chapter 3: Office Tools

 (Q & A)

Q1: What is database? Give example.

Answer: A database is a collection of related information organised as tables is known as database, e.g. INGRES, MySQL etc.

Q2: What is MS Office suite?

Answer: Microsoft office is a suite of products that aim at making easy integration of data between different applications such as Word Processor, Spreadsheet, Presentation Graphics and Database Manager.

Q3: Define the term DBMS.

Answer: The full form of DBMS is Database Management System. It is a computer based record keeping system. 

CBSE Class 6 - Science - Chapter 14 - Water (Worksheet) (#cbsenotes)(#eduvictors)

Science - Chapter 14 - Water 

(Worksheet)

Fill in the blanks

1. Our Earth is covered by _________ of water, but most of the water is not ________ and contains salt.

2. Nearly _______ of our body is made up of water and the rest is solid matter.

3. _____________ is a process in which there is a loss of water from plants as water vapour through the pores of their leaves.


4. The circulation of water from the oceans and the surface of the earth, to the air as water vapour,
and its return to the ocean as rain, hail or snow, is called the _______ ________.


5. Water which is fit for human consumption is known as ______ water.