| Que. | Which of the following is used as the embedded SQL in COBOL ? |
|---|---|
| b. | EXEC SQL <embedded SQL statement > END-EXEC |
| c. | EXEC SQL <embedded SQL statement > |
| d. | EXEC SQL <embedded SQL statement > END EXEC; |
| Answer:EXEC SQL <embedded SQL statement > END-EXEC |
What is embedded SQL and how is it used?
Embedded SQL is a method of combining the computing power of a programming language and the database manipulation capabilities of SQL. Embedded SQL statements are SQL statements written inline with the program source code, of the host language.
Which of the following is used as embedded SQL in Cobol?
Which of the following is used as the embedded SQL in COBOL? Explanation: EXEC SQL <embedded SQL statement >; is normally in C. 8.
What is embedded SQL example?
Some embedded SQL statements are not part of standard SQL. The INCLUDE SQLCA statement is one example. In addition to SQL statements, embedded SQL also provides library functions to perform some specific tasks. The functions db_init and db_fini are two examples of library function calls.
What are embedded SQL commands?
The Embedded SQL commands include the following:
- ALLOCATE DESCRIPTOR Allocate memory for a descriptor.
- CLOSE close a cursor.
- CONNECT connect to the database.
- DEALLOCATE DESCRIPTOR Reclaim memory for a descriptor.
- Declaration Section declare host variables for database communication.
- DECLARE declare a cursor.
What are the advantages of embedded SQL?
Some of the advantages of using SQL embedded in high-level languages are as follows:
- Helps to access databases from anywhere.
- Allows integrating authentication service for large scale applications.
- Provides extra security to database transactions.
- Avoids logical errors while performing transactions on our database.
Is ODBC an API?
Open Database Connectivity (ODBC) is an open standard Application Programming Interface (API) for accessing a database.
What is the correct order to close database resources Mcq?
The rules for closing JDBC resources are: The ResultSet object is closed first, then the Statement object, then the Connection object.
What is embedded SQL in mainframe?
Embedded SQL statements are used in COBOL programs to perform standard SQL operations. Embedded SQL statements are preprocessed by the SQL processor before the application program is compiled. COBOL is known as the Host Language. COBOL-DB2 applications are those applications that include both COBOL and DB2.
Which of the following is used to input the entry and give the result in a variable in a procedure?
Which of the following is used to input the entry and give the result in a variable in a procedure? Explanation: Create procedure dept count proc(in dept name varchar(20), out d count integer). Here in and out refers to input and result of procedure. 4.
What is Dynamic SQL example?
For example, dynamic SQL lets you create a procedure that operates on a table whose name is not known until runtime. In past releases of Oracle, the only way to implement dynamic SQL in a PL/SQL application was by using the DBMS_SQL package. … A Dynamic SQL Scenario Using Native Dynamic SQL. Native Dynamic SQL vs.
What are different types of joins in SQL?
Basic SQL JOIN types
- INNER JOIN. INNER JOIN statement returns only those records or rows that have matching values and is used to retrieve data that appears in both tables. …
- OUTER JOIN. …
- LEFT OUTER JOIN. …
- RIGHT OUTER JOIN. …
- SELF JOIN. …
- CROSS JOIN.
What is difference between SQL and Plsql?
PL/SQL stands for “Procedural language extensions to SQL.” PL/SQL is a database-oriented programming language that extends SQL with procedural capabilities.
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Comparisons of SQL and PLSQL:
| SQL | PLSQL |
|---|---|
| SQL is declarative language. | PLSQL is procedural language. |
| SQL can be embedded in PLSQL. | PLSQL can’t be embedded in SQL. |