0
What else can I help you with?
What is the differene between Oracle and database?
Oracle is a database. Oracle is a Relational Database Management System which is a specialized implementation of a database. It is designed to hold data that is related to one another and organized in the form of schemas and tables.
Description of database subschema?
What are the purpose of developing a sub-schema in database? In database management, the Subschema pronounced "sub-skee-mah." is an individual user's partial view of the database while the schema is the entire database. It is the applications programmer's view of the data within the database pertinent to the specific application. A subschema has access to those areas, set types, record types, data items, and data aggregates of interest in the pertinent application to which it was designed. Naturally, a software system usually has more than one programmer assigned and includes more than one application. This means there are usually many different sub schemas for each schema. The following are a few of the many reasons sub schemas are used: # Sub schemas provide different views of the data to the user and the programmer, who do not need to know all the data contained in the entire database. # Sub schemas enhance security factors and prohibit data compromise. # Sub schemas aid the DBA while assuring data integrity. Each data item included in the subschema will be assigned a location in the user working area (UWA). The UWA is conceptually a loading and unloading zone, where all data provided by the DBMS in response to a CALL for data is delivered. It is also where all data to be picked up by the DBMS must be placed.
Explain the difference of internal external and conceptual schemas how are these schema layers related to the concept of logical and physical data independence?
External schemas allows data access to be customized (and authorized) at the level of individual users or groups of users. Conceptual (logical) schemas describes all the data that is actually stored in the database. While there are several views for a given database, there is exactly one conceptual schema to all users. Internal (physical) schemas summarize how the relations described in the conceptual schema are actually stored on disk (or other physical media). External schemas provide logical data independence, while conceptual schemas offer physical data independence.
A database is made up of related?
A database is made up of related Schemas and Tables. A single database can have multiple schemas and each schema can have multiple tables inside it. All of these can be related to one another using referential constraints like foreign keys.
What is a database made up?
Database comprises of records that are related to each other. In database the data is stored in the form of tables, are called database tables .
Which website has an ein number database?
If you are interested in finding a website that has a EIN numbers database, there are many available. One of the most popular and most used it is einfinder.
What is the typical language for database management?
The typical language for database management is SQL. This is one of many programming languages, but this is the predominate one for database management.
How many active directory schemas can you have in a single Microsoft Windows server 2003 forest?
Only one Schema Master are user in Forest
How many tables are required in access database?
one
What is interperting?
There are number of commands in database (SQL) that are used to control , manipulate , retrieve data. One such command is DDL which is used for defining the schema of database.
How many Access database can you have open at one time?
as many as you want
What is a one-to-many relationship?
It is a term from computer databases. A relational database can have a one-to-many relationship in its data. For example, if you have a customer order database, one table will contain customer names and another will contain their orders. Each customer will only be listed once, but each customer can make many orders. So one customer can be related to many orders. Incorporating that into a database requires the creation of a one to many relationship.
