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What are the advantages of Logical Databases?
It offers a simple-to-use selection screens. You can change the pre-generated selection screen to your needs. It offers check functions to check whether user input is finish, correct, and plausible. It offers reasonable data selections. It having central authorization checks for data base accesses.
Explain Interfaces for parametric Users? Interfaces for Parametric Users - Parametric users, such as bank tellers, frequent have a little set of operations in which they must p
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Shared lock or Read Lock It is requested by a transaction that needs to just read the value of data item. A shared lock on a data item does not permit an exclusive lock
Objectives After reading this part, you should be able to: Modify, create, and delete database schema objects; Update database using SQL command; Retrieve data f
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Create a new user : CREATE USER IDENTIFIED BY Example: //CREATE USER MCA12 IDENTIFIED BY W123 Grant: It is used to give database access permission to users. It is of
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
Explain how the object classes are mapped to tables. Each object class maps to one or more than one tables in the database. The objects in the class may be partitioned horizont
What is a dataset? A dataset is an in-memory database that is disconnected from any regular database, but has all the significant characteristics of a regular database. Dataset
Data Handling and Research Methods: The dataset encompassing 130 participants contains several variables measuring detrimental health related behaviours referring to the use o
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