If you are looking for Corporate Assessment Test for Interview Screening the Candidates who applied for job vacancies, you are at right place. We are offering Corporate Assessment Test for Interview Screening. Contact us in chat box, we will call you back.
Eklavya Online is Free Study Portal for NewBies and Experienced Guys who wanna upgrade their knowledge in their respective industry and strive to learn more.
DBMS Interview Questions – Set 11 DBMS Interview Questions – Set 10 DBMS Interview Questions – Set 09 DBMS Interview Questions – Set 08 DBMS Interview Questions – Set 07 DBMS Interview Questions – Set 06 DBMS Interview Questions – Set 05 DBMS Interview Questions – Set 04 DBMS Interview Questions – Set 03 DBMS Interview Questions – Set 02 DBMS Interview Questions – Set 01
There are following types of keys: Primary key: The Primary key is an attribute in a table that can uniquely identify each record in a table. It is compulsory for every table. Candidate key: The Candidate key is an attribute or set of an attribute which can uniquely identify a tuple. The Primary key can be selected from these attributes. Super key: The Super key is a set of attributes which can uniquely identify a tuple. Super key is a…
Shared lock: Shared lock is required for reading a data item. In the shared lock, many transactions may hold a lock on the same data item. When more than one transaction is allowed to read the data items then that is known as the shared lock. Exclusive lock: When any transaction is about to perform the write operation, then the lock on the data item is an exclusive lock. Because, if we allow more than one transaction then that will…
You have to use Structured Query Language (SQL) to communicate with the RDBMS. Using queries of SQL, we can give the input to the database and then after processing of the queries database will provide us the required output. To communicate with an RDBMS (Relational Database Management System), you typically use Structured Query Language (SQL). SQL allows you to interact with the database by performing tasks such as querying data, inserting new records, updating existing records, and deleting records. Additionally,…
The 3-Tier architecture contains another layer between the client and server. Introduction of 3-tier architecture is for the ease of the users as it provides the GUI, which, make the system secure and much more accessible. In this architecture, the application on the client-end interacts with an application on the server which further communicates with the database system.
The 2-Tier architecture is the same as basic client-server. In the two-tier architecture, applications on the client end can directly communicate with the database at the server side. In a 2-tier architecture for a database management system (DBMS), there are two layers or tiers involved: the client tier and the server tier. Client Tier: This is where the user interface resides. It interacts directly with the end-user and sends requests to the server tier for processing. The client tier is…
DELETE command: DELETE command is used to delete rows from a table based on the condition that we provide in a WHERE clause. DELETE command delete only those rows which are specified with the WHERE clause. DELETE command can be rolled back. DELETE command maintain a log, that’s why it is slow. DELETE use row lock while performing DELETE function. TRUNCATE command: TRUNCATE command is used to remove all rows (complete data) from a table. It is similar to the…
A stored procedure is a group of SQL statements that have been created and stored in the database. The stored procedure increases the reusability as here the code or the procedure is stored into the system and used again and again that makes the work easy, takes less time in processing and decreases the complexity of the system. So, if you have a code which you need to use again and again then save that code and call that code…