Protected: Structured Query Language [SQL] Interview Questions
There is no excerpt because this is a protected post.
Read moreThere is no excerpt because this is a protected post.
Read moreIn case if we want to identify duplicates rows of a table and want to…
Read moreWhat is Recovery Catalog? A recovery catalog is a database schema used by RMAN Which…
Read moreSELECT NAME ,OPEN_MODE FROM V$DATABASE;SELECT LOG_MODE FROM V$DATABASE;SELECT NAME FROM V$DATAFILE;SELECT NAME FROM V$TABLESPACE; CREATE…
Read moreThe ROW_NUMBER built-in SQL function provides superior support for ordering the results of a query.…
Read moreOratop is a text based user interface tool similar to top command for monitoring basic…
Read moreFor each row in the database, the ROWID pseudocolumn returns the address of the row.…
Read moreSQL Macros You can create SQL macros (SQM) to factor out common SQL expressions and…
Read moreThe Oracle COALESCE() function accepts a list of arguments and returns the first one that…
Read moreOverview of Triggers A database trigger is a compiled stored program unit, written in either…
Read moreCharacter Data Types: • CHAR Data Type • VARCHAR2 Data Type • VARCHAR Data Type…
Read morePrimary Key Constraints A primary key constraint designates a column as the primary key of…
Read moreData Concurrency A requirement of a multiuser RDBMS is the control of data concurrency, which…
Read moreA transaction is a logical, atomic unit of work that contains one or more SQL…
Read moreData Consistency In Oracle Database, each user must see a consistent view of the data,…
Read moreStructured Query Language (SQL) is the set of statements with which all programs and usersaccess…
Read moreIn Oracle Database, a database schema is a collection of logical data structures, or schema…
Read moreThe pattern-matching conditions compare character data. LIKE Condition * The LIKE conditions specify a test…
Read moreThe dynamic performance views are special views that are continuously updated while a database is…
Read moreA check constraint on a column or set of columns requires that a specified condition…
Read moreNOT NULL Constraints The NOT NULL constraint ensures that the column contains no null values.…
Read more