Here, you will find a collection of real-world Interview questions asked in companies like Google, Oracle, Amazon, and Microsoft, etc. Each question comes with a perfectly written answer inline, saving your int
MySQL: Using limit clause, exampleselect * from Employee limit 10;Oracle: Using ROWNUM clause, exampleSELECT * FROM Employee WHERE ROWNUM < 10;SQL Server: Using TOP clause, exampleSELECT TOP 3 * FROM Employee;39. ### How can you maintain the integrity of your database on instances where ...
To help, I am providing a guide on PL/SQL interview questions. I will begin with the fundamental concepts and move forward to more advanced topics like bulk processing, dynamic SQL, and performance tuning. If you want to understand the foundational concepts of the Oracle database, I recommend...
Oracle NoSQL Database is a distributed, highly performant, highly available scalable key-value database. Oracle NoSQL Database provides key-value pair data management over a distributed set of storage nodes, providing automatic data partitioning, distrib
A lot of relatable database management systems feature SQL. The following systems are Oracle, Microsoft SQL Server, Sybase, Access, and others. MySQL is one of the most widely used databases in RDBMS. This review was done by the American National Standards Institute (ANSI). The SQL statements...
Frequently asked SQL Server Interview Questions and Answers for freshers, intermediate, and experienced which will definitely ace your SQL Server Interview.
Examples XML, file systems, Microsoft Access (basic) MySQL, PostgreSQL,Oracle, SQL Server 2. What are tables, Fields, and records in SQL? Tables, fields, and Records are fundamental building blocks of a database structure in SQL. Table: A table is a collection of related data organized in...
ORACLE 04 表的创建与管理 说明snoCHAR10主键 snameVARCHAR28sexCHAR2默认为男,只能输入男或女 birthday DATE SdeptCHAR20 (2)创建名为course...windows,ORACLE10g 四、实验步骤 1、(1)创建student表使用OEM工具: 使用SQL语句创建: (2)创建course表(4) 创建score表2、增加、修改和删除字段 (1 ...
Implicit cursor : Implicit cursor is a buffer area which has been defined and controlled by oracle internally. Implicit cursor will process single record at a time. example : declare v_Ename varchar2(100); begin select ename into V_Ename from Employee where empno=101; ...
SQL*Loader is a product for moving data in external files into tables in an Oracle database. To load data from external files into an Oracle database, two types of input must be provided to SQL*Loader : the data itself and the control file. The control file describes the data to be ...