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Cursor ORACLE
https://www.guru99.com/pl-sql-cursor.html
Oracle PL/SQL offers native support for the execution of static (also referred to as "embedded") SELECT statements. Use a SELECT to query data from one or more tables in the Oracle database, and then deposit that date into variables in your PL/SQL program.
While all querying occurs through the SELECT, PL/SQL offers a number of different ways to construct and execute queries, including:
SELECT-INTO: fetch a single row of data, leaving Oracle to open, fetch and close the cursor.
SELECT-BULK COLLECT INTO: fetch multiple rows of data, leaving Oracle to open, fetch and close the cursor.
Explicit Cursor: declare a CURSOR in a PL/SQL program and then write OPEN, FETCH and CLOSE statements to retrieve the data and manage the cursor.
Cursor FOR loop: use the FOR loop construct with a SELECT statement to fetch multiple rows, leaving Oracle to declare a record, open, fetch and close the cursor.
Cursor Variables: declare a variable, assign a cursor to it with an OPEN FOR statement.
EXECUTE IMMEDIATE-INTO: execute a dynamically-constructed SELECT statement, and fetch the row into variables.
EXECUTE IMMEDIATE-BULK COLLECT INTO: execute a dynamically-constructed SELECT statement, and fetch multiple rows into one or more collections.
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300+ TOP PL/SQL Objective Questions and Answers
PLSQL Multiple Choice Questions :-
1. Which of the following statements is true about implicit cursors? A. Implicit cursors are used for SQL statements that are not nameD. B. Developers should use implicit cursors with great carE. C. Implicit cursors are used in cursor for loops to handle data processing. D. Implicit cursors are no longer a feature in OraclE. Ans: A 2. Which of the following is not a feature of a cursor FOR loop? A. Record type declaration. B. Opening and parsing of SQL statements. C. Fetches records from cursor. D. Requires exit condition to be defineD. Ans: B 3. A developer would like to use referential datatype declaration on a variablE. The variable name is EMPLOYEE_LASTNAME, and the corresponding table and column is EMPLOYEE, and LNAME, respectively. How would the developer define this variable using referential datatypes? A. Use employeE.lname%typE. B. Use employeE.lname%rowtypE. C. Look up datatype for EMPLOYEE column on LASTNAME table and use that. D. Declare it to be type LONG. Ans: A 4. Which three of the following are implicit cursor attributes? A. %found B. %too_many_rows C. %notfound D. %rowcount E. %rowtype Ans: C 5. If left out, which of the following would cause an infinite loop to occur in a simple loop? A. LOOP B. END LOOP C. IF-THEN D. EXIT Ans: B 6. Which line in the following statement will produce an error? A. cursor action_cursor is B. select name, rate, action C. into action_record D. from action_table; E. There are no errors in this statement. Ans: C 7. The command used to open a CURSOR FOR loop is A. open B. fetch C. parse D. None, cursor for loops handle cursor opening implicitly. Ans: D 8. What happens when rows are found using a FETCH statement A. It causes the cursor to close B. It causes the cursor to open C. It loads the current row values into variables D. It creates the variables to hold the current row values Ans: B 9. What is the maximum number of handlers processed before the PL/SQL block is exited when an exception occurs? A. Only one B. All that apply C. All referenced D. None Ans: A 10. For which trigger timing can you reference the NEW and OLD qualifiers? A. Statement and Row B. Statement only C. Row only D. Oracle Forms trigger Ans: D
PL/SQL MCQs 11. PL/SQL subprograms, unlike anonymous blocks, are compiled each time they are executeD. True or False? A. True B.False Ans: A 12. Subprograms and anonymous blocks can be called by other applications. A.True B.False Ans: A 13. A nested subprogram can be called from the main procedure or from the calling environment. Trueor False? A. True B. False Ans: B 14. When modifying procedure code, the procedure must be re-executed to validate and store it in thedatabasE. A. True B. False Ans: A 15. Which of the following can be used as an argument for a procedure parameter? A.The name of a variablE. B.A literal valuE. C.An expression. D.All of the abovE. E.None of the above Ans: D PL/SQL Objective type Questions with Answers 16. If you don’t specify a mode for a parameter, what is the default mode? A.OUT B.IN C.COPY D.DEFAULT E.R(ead) Ans: B 17. Which kind of parameters cannot have a DEFAULT value? A.OUT B.IN C.CONSTANT D.R(ead) E.W(rite) Ans: A 18. What are the three parameter modes for procedures? A.IN, OUT, IN OUT B.R(ead), W(rite), A(ppend) C.CONSTANT, VARIABLE, DEFAULT D.COPY, NOCOPY, REF Ans: A 19. Which one of the following statements about formal and actual parameters is true? A.Formal and actual parameters must have the same namE. B.Formal and actual parameters must have different names. C.A formal parameter is declared within the called procedure, while an actual parameter is declared in thecalling environment. D.An actual parameter is declared within the called procedurE. Ans: C 20. What is the correct syntax to create procedure MYPROC that accepts two number parameters X and Y? A.CREATE PROCEDURE myproc (x NUMBER, y NUMBER) IS … B.CREATE PROCEDURE (x NUMBER, y NUMBER) myproc IS … C.CREATE PROCEDURE myproc IS (x NUMBER, y NUMBER) … D.CREATE PROCEDURE IS myproc (x NUMBER, y NUMBER) …. Ans: A 21. Functions in PL/SQL are a collection of ________and PL/SQL statements that perform a task and should return a value to the calling environment. A. Microsoft SQL Server B. SQL C. Query language D. IBM DB2 Ans: B 22. As a procedural language by definition, PL/SQL provides several iteration constructs, including basic LOOP statements, WHILE loops, ________, and Cursor FOR loops. A. Imperative programming B. Programming language C. Control flow D. For loop Ans: D 23. The StepSqlite product is a PL/SQL compiler for the popular small database ________. A. JavaScript B. Java (programming language) C. Mozilla Firefox D. SQLite Ans: D 24. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), ________ (since version 9.7). A. IBM DB2 B. IBM PureQuery C. IBM Informix D. Microsoft SQL Server Ans: A 25. The Fyracle project aims to enable the execution of PL/SQL code in the________ Firebird databasE. A. Open source B. Linux C. Free software D. Open-source software Ans: A 26. PL/SQL (Procedural Language/Structured Query Language) is________’s procedural extension language for SQL and the Oracle relational databasE. A. Intel Corporation B. Oracle Corporation C. Dell D. Google Ans: B 27. PL/SQL functions analogously to the embedded procedural languages associated with other ________. A. Relational model B. Database normalization C. Relational database D. Relation (database) Ans: C 28. This resembles usages in object-oriented programming languages like________, C++ and Java. A. Pascal (programming language) B. Free Pascal C. Object Pascal D. Embarcadero Delphi Ans: C 29. The structure of a PL/SQL package closely resembles the basic Pascal program structure or a ________ unit. A. Free Pascal B. Lazarus (software) C. Embarcadero Delphi D. Turbo Pascal Ans: C 30. What is the maximum number of ELSE clauses that can be included in an IF clause that is not nested? A. 0 B. 1 C. 15 D. Any number Ans: B PL/SQL Questions and Answers Pdf Download Read the full article
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs Source: http://jobrealtime.com/jobs/technology/oracle-plsql-developer_i4060
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Oracle Database 10g Program with PLSQL
This Oracle Database: Program with PL/SQL training starts with an introduction to PL/SQL and then explores the benefits of this powerful programming language. Through hands-on instruction from expert Oracle instructors, you'll learn to develop stored procedures, functions, packages and more.
Course Objectives
· Use conditional compilation to customize the functionality in a PL/SQL application without removing any source code
· Design PL/SQL packages to group related constructs
· Create overloaded package subprograms for more flexibility
· Design PL/SQL anonymous blocks that execute efficiently
· Use the Oracle supplied PL/SQL packages to generate screen output, file output and mail output
· Write dynamic SQL for more coding flexibility
· Describe the features and syntax of PL/SQL
· Create and debug stored procedures and functions
· Use PL/SQL programming constructs and conditionally control code flow (loops, control structures, and explicit cursors)
· Manage dependencies between PL/SQL subprograms
· Handle runtime errors
· Create triggers to solve business challenges
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://jobsaggregation.com/jobs/technology/oracle-plsql-developer_i4060
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://cvwing.com/jobs/technology/oracle-plsql-developer_i5355
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs Source: http://cvwing.com/jobs/technology/oracle-plsql-developer_i5355
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://www.qoholic.com/jobs/technology/oracle-plsql-developer_i5668
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://jobsaggregation.com/jobs/technology/oracle-plsql-developer_i4060
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://www.qoholic.com/jobs/technology/oracle-plsql-developer_i5668
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://linkhello.com/jobs/technology/oracle-plsql-developer_i4257
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oracle database training in ameerpet
Oracle Database is an object-relational database management system (ORDBMS) developed and marketed by Oracle Corporation. Oracle Database is commonly referred. In the early 70’s Dr. EFT Codd, a computer scientist, invented the relational model for database management. The relational model deals with many issues caused by the flat file model or the FMS (File Management System). According to his model, instead of combining everything in a single structure, data is organized in entities and attributes to make it more effecient. Oracle has the SQL (Structured Query Language) and also support PL/SQL (Procedural Language using SQL).
Career Prospects
This course is meant for everyone who would like to visualize how information gets stored and delivered to end users and a solid understanding of the Oracle products used in professional job roles.
Application Developer
Database Developer
Support Analyst
Curriculum
Introduction to DBMS • DBMS, Data, Information, Database Data models – FMS/ HDBMS/ NDBMS/ RDBMS/ ORDBMS • E-R Diagram, Normalization, Codd Rules • RDBMS Packages • Versions SQL (Structured Query Language) • SQL and SQL*Plus Commands • Types of commands in SQL • How to login into SQL • HR user, locking & unlocking user Retrieving data • Select statement usage • Alias names – columns & expressions • Applying filters using operators • Operators – Relational/ Logical / Special • Distinct clause, Order by clause • Sorting NULL values Working with tables • Datatypes in Oracle • Naming conventions; Rules – tables/columns • Creating Tables in different methods DML operations • Insert data in different methods • Update / Delete data DDL commands • Alter / Truncate / Rename / Drop table • Recyclebin concept • Flashback / Purge Table Constraints • Data Integrity and importance • Not Null/Unique/Primary Key/ Check • References/Foreign Key • Add/enable/disable/drop constraints • Composite primary key/unique key • About ‘User_constraints’ table TCL commands (Transaction Handling) • About login session • Redo log files • Commit / Rollback / Savepoint • Working with multiple savepoints DCL Commands • User management, SYSTEM user • Create user, Grant basic privileges • Change password, lock/unlock user • Grant/Revoke a user as DBA • Data sharing between users • Grant and Revoke commands • Accessing another user data • Dead lock situations About ‘User_tab_privs_made’, ‘User_tab_privs_recd’ Database functions • Group / Row / Numeric / String • Conversion functions • Dates & date formats • Date functions, Misc. functions • Pseudo columns Data grouping • Group by / Having clause • ‘where’ versus ‘having’ clause • Using expressions in group by Set operators • Union/ Intersect/ Minus/ Union All Subqueries • Simple / Multiple row subquery • Nested / Co-related subquery Joins tables • Simple join (equi and non-equi) • Self/ inner / Outer join (Left/Right/Full) • Cartesian/Cross join • ANSI Standard of joins Oracle Database objects • Synonyms • Views • Sequences • Indexes PLSQL PL/SQL architecture • PL/SQL engine • Structure of a PL/SQL program • Different section of a program • Datatypes in PL/SQL • Operators, I/O operations • Write expressions, simple program • Extracting data from tables Control statements • If-Then-Else – Simple, Nested • Compound conditions (and/or/not) • Case – End Case • Loops – For/ While/ Simple/ ForALL Exception Handling • Introduction • Types of Exceptions • Runtime errors vs Exceptions • System / User defined exceptions • Using multiple exceptions • Raise_Application_Error() Cursor management • Cursor types – Implicit / Explicit • Cursor attributes • Declaring, opening, closing • Fetching, checking End of cursor • Parameterized cursor • For loops in cursor processing • DML operations using cursors • Cursor using joins Sub programs Stored Procedures • Creating a simple procedure • Compiling, verifying errors • Executing procedure from SQL prompt • Calling procedure in another PL/SQL program • Procedure including DML operations • Procedures with parameters • Types of parameters (IN, OUT & IN OUT) • Cursors in a procedure User defined Functions • Writing a user’s function • About ‘Return’ statement • Compiling, verifying errors • Executing from SQL prompt • Functions with parameters (IN, OUT & IN OUT) Packages • Create package specification / body • Calling the elements of a package • Adv of package over procedure/function • Implementing Polymorphism • Function overloading • Procedure overloading Database Triggers • Types of triggers • Creating before/after triggers • :OLD, :NEW reference for data references • DML operations using triggers • ‘Instead of’ triggers • Triggers Vs constraints • Transaction auditing using triggers
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://ebagg.com/jobs/technology/oracle-plsql-developer_i4103
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Oracle PL/SQL Developer
Job Title : Oracle PL/SQL Developer Location : Sterling, VA Duration : 6+Months Desired Skills: Experience as Oracle developer Should have strong experience in Data Migration Job Description: Mandatory Skills: Experience as Oracle developer Should have strong experience in Data Migration SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs Source: http://jobrealtime.com/jobs/technology/oracle-plsql-developer_i4027
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs source http://jobrealtime.com/jobs/technology/oracle-plsql-developer_i4060
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Oracle PL/SQL Developer
Job Title :Oracle PL/SQL Developer Duration :Contract Location :Sterling, VA Job Description: Basically, we are looking for hands on Oracle developer who is strong in Data Migration and, SQL basics Indexes Cursor's Inbuilt functions available exception handling Collections in PL/SQL Hands-on Query writing Partitioning Concept Dynamic SQL's Autonomous Transactions Performance Tuning Technics -- Reference : Oracle PL/SQL Developer jobs from Latest listings added - JobRealTime http://jobrealtime.com/jobs/technology/oracle-plsql-developer_i4060
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