Database Design

Data dependence is the way in which the data is organized in secondary storage, and the technique for accessing it, are both dictated by the requirements of the application under consideration, and moreover that knowledge of that data organization and that access technique is built into the application logic and code.

The word robustness, when used with regard to computers, refers to an OS or other program that performs well not only under ordinary conditions but also under unusual conditions that stress its designers' assumptions.

We know that schema in the database is refer to the basic design of that database and is stored in an object . That object is known as schema object of database.

purpose

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Primary key that is used to identify a record uniquely. Primary key is a key that always unique and not null. A system generated primary key is called surrogate key.

Primary key is the one which is always unique and not null. Advantage of primary key that it helps in identifying a tuple uniquely.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Tables are central to a database. A table stores the data. Everything else in the database, such as queries, forms and reports, use the data from the table. Without tables, a database is useless as it would have no data.

Advantage of Segmentation:-

1. Focus of the company

2. Inccrease in competitiveness

3. Market expansion

4. Customer Retension

5. Have better communication

6. Increase profitability

The foreign key is a reference to a key (identifier) of a row in another or even the same table. When the foreign key is not null, it implies that there's an entry in the referenced table with that identifier.

The syntax depends on wich database are you using, check the page in the related links below.

I also have the same problem with other data cards.

Generalization means to categorize some things in to a general category . In database also generalization means the same. Consider an example like Car and Motorcycle can be categorized in to one general category VEHICLE .

DBS has more security and data integrity.It reduce data redundancy and updating errors which can occur in FBS.Contains of concurrent data access.But also it's expensive to use and they are also complex.Damage to DB affects virtually all application programs.

to minimize storage requirement,dimension attribute r usually short identifiers that r foreign keys in2 other table called dimension table.

Placid04

muzaffarpur,bihar,26 march ,2012

Well, you become more organized, but if you don't keep everything up to date, then you could find yourself in a big mess. When I started my first filing system, it was working great. But then, I became to busy for it and left it abandonded. Finally, I lost track of all of my paperwork, bills, and had to reorganize it. So, if you want to start a filing system, make sure you are going to stick to it.

An auto-incremented key is a key (often used in a parent/foreign key constraint) that is generated automatically by a sequence number generator. The database provides the sequence generator, and generation/acquisition is wrapped in a transaction so that integrity can be preserved. Often, however, if a rollback is done, key values are lost, but this is not an issue in properly designed parent/foreign key relationships.

Relational model of database is a good way to represent the database. Also network data model and hierarchical model can be used depending on the requirements.

In database there are number of issues to be handled ,like redundant data, inconsistent data, unorganized data etc. Redundancy of data is the repetitive data that is taking the storage unnecessarily . So the redundant data must be removed or at least reduced.

One is a simple way of doing it and one is a complicated way of doing it.

Hi,

Denormalisation is the process to read the performance by adding redundancy of data or by grouping of data.

The hub accepts data from the senders and delivers it to the receiver . in practice , a star network seldom has a symmetric shape . The hub often resides in a separate location from one computer attached to it .

using plsql sql

a magnetic casting is what goes over a magnet

Yes you can. You can create queries that do calculations. You can write code for programs to do calculations in a database. Doing calculations is a significant element of what you do with a database, so yes you can do them within a database.

In DBMS the data is stored in the form of table . Each row in DBMS is known as tuple.

An arbitrary group of fields within a database record. Usually has some meaning in the context of the record. For example a 3-tuple in an address record might be the fields that contain the first, middle and last names of the person in the address field.