Database Programming

A Composite Entity is represented by a collection of Inter-related Entity types which togather represent a business Concept. An example of this concept is a Person's Health Record, Equipment Record, Equipment Maintenance Record.

single valued attribute are one character in a record

Alphabetic Data is in the form of Alphabets as well as space between two words. like Farhan ul Hasan , Karachi , Computer Studies etc.

An example of indexed sequential access is a library catalog system. In this system, books are organized in a sequential manner by their titles or authors, but an index is maintained that allows users to quickly locate specific books based on keywords or categories. This hybrid approach combines the benefits of sequential access for browsing and indexed access for efficient searching.

Pharmacy-benefits management firms, or PBMs, are essentially intermediaries that negotiate discounts with pharmaceutical companies for large employers and managed-care insurers or health plans.

As I understand it, a database schema is a physical entity, it describes the structure of exactly how the data is stored and is itself stored by DBMS for reference. Data model, on the other hand, is an abstract representation of database.

Part of AVG (anti virus software)
Hello Hans,

Please use latest version of AVG remover (build 1165), then remove all remained AVG folders* (if exist):

C:\Program files\AVG
C:\Documents and settings\All users\Application data\MFAData

C:\Documents and settings\All users\Application data\AVG8
C:\Documents and settings\All users\Application data\AVG9
C:\Documents and settings\All users\Application data\AVG10

Then check the AVG installation again. What is the current situation?

If the situation still persists, please gather (pack in an archive or zip file) latest AVG installation logs and "avgremover.log" from folder, where AVG remover has been run, upload the archive (zip file) to favorite online storage and provide us with link to uploaded file.

Thank you

* Some folders could be hidden by default Windows settings. To view hidden files and folders:
1. On the taskbar, click Start -> (Settings) -> Control Panel -> (Appearance and Personalization) -> Folder options.
2. Click the View tab.
3. Click ?Show hidden files and folders? (the name may vary depending on the operating system).
4. Click OK.

Data hierarchy is the structure and organization of data, which involves fields, records, and files. (c) Bidgoly MIS2.

Network Database

Any group of keys or columns (may be one or more than one) which can be used to uniquely refer to any row is together called as candidate key.

A primary key only one column name which can be used to uniquely refer any row.
there is no much difference b/w these two except the number of columns in consideration.

I am sure they do.

(although I have no direct knowledge of their data processing I cannot imagine that a company as large as Unilever would not have a great number of databases and so would need quite sophisticated database management systems to keep track of what they need to know!)

recording information into a computer

Query processing can be divided into four main phases: decomposition, optimization, code generation, and execution.

Two main types:

Relational Calculus based Language

Relational Algebra based Language.

These languages provide similar set of operations but with different syntax. Calculus based is more kind of procedural and near to English, while Algebra based uses a set of symbols for queries.

SELECT columns FROM tables INTO tablename - will create and insert values

INSERT INTO table SELECT columns FROM tables - will insert from one or more tables into a table

INSERT (columns) INTO table VALUES (literals) - will insert literal values into row in a table

data base means a collection of data,which may be inter related.

data base management system is a collection of programs for managing the data base.

Consist of a collection of related data.

Fahad

administrator

The term "product differentiation" refers to making a product stand out from others, to attract buyers from a particular segment. Database technology can help if it is sorted to display potential buyers from the target market.

what do u mean by lossiess join in dbms

Lots of people use databases, teachers, doctors even librarian's. For example, a librarian uses a database to keep information of all the people who borrow books from the library, their names, address, contact numbers and so on!!:)