Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Databases Interview Questions

Questions Answers Views Company eMail

How to create lov dynamically in oracle forms which is data comes from database procedure of out parameter, data will will out parameter of procedure base

1 1549

create or replace procedure search_matter(empno varchar2) as sql_stmt varchar2(200); stmt varchar2(200); v_table_name varchar2(200); val_pres number; inp_value varchar2(200); type obj_typ is table of cols.column_name%type index by binary_integer; type all_col is table of varchar2(100) index by binary_integer; typ_obj_typ obj_typ; typ_all_col all_col; begin select object_name bulk collect into typ_obj_typ from user_tables,user_objects where table_name = object_name AND object_type = 'TABLE'; select empno into inp_value from dual; dbms_output.put_line('inp value : '||inp_value); for i in typ_obj_typ.first..typ_obj_typ.last loop v_table_name := NULL; v_table_name := typ_obj_typ(i); dbms_output.put_line(i||':'||typ_obj_typ(i)); dbms_output.put_line('....................'); sql_stmt := 'select column_name from cols where table_name = :1 and data_type in (''CHAR'', ''VARCHAR2'', ''NCHAR'', ''NVARCHAR2'',''NUMBER'')'; EXECUTE IMMEDIATE sql_stmt bulk collect into typ_all_col using typ_obj_typ(i); for inside in typ_all_col.first..typ_all_col.last loop dbms_output.put_line('sql stmt: '||sql_stmt); dbms_output.put_line('column name: '||typ_all_col(inside)||'table name: '||typ_obj_typ(i)); stmt := 'select count(*) from ||typ_obj_typ(i)||'; EXECUTE_IMMEDIATE stmt into val_pres ; if val_pres = 1 then dbms_output.put_line('value present col name: '||typ_all_col(inside)||'table name :'||typ_obj_typ(i)); end if; end loop; dbms_output.put_line('....................'); end loop; exception when others then dbms_output.put_line('sql code '||sqlcode||'Table name: '||v_table_name); dbms_output.put_line('sql message '||sqlerrm); end; Compile-time I am getting below error, Plz help to resolve. LINE/COL ERROR -------- ----------------------------------------------------------------- 47/23 PLS-00103: Encountered the symbol "STMT" when expecting one of the following: := . ( @ % ;

957

table a has records 1,1,1,1 table b has records 1,1,1,1,1,1 what would be out if perform join for all cases

1280

Sql technical questions

1200

What is view? Can we update view

1352

What is materialized view. What are different methods of refresh?

1329

What if we write return in procedure?

1333

what is cursor. write example of it. What are the attributes of cursor.

1308

How to handle bulk data?

1269

What is the difference between Union and Union all. Which is faster.

1340

What are the steps for performance tuning.

1267

What is parallel hint?

1219

What is the difference between SQL and NoSQL databases

1 932

What is a primary key, and how is it different from a unique key?

3 1112

How do you retrieve the second highest salary from a table?

3 1158

Un-Answered Questions { Databases }

What is a sql profiler?

960

What are the main features of a database?

945

What are database links used for?

989

What are the important features of ms access?

822

What are documents in mongodb?

In one interview...interviewer ask me question pleas tell me sql server architecture.. can any body tell me the sql server architecture with digram

1925

Mention what are the different types of ssrs reports?

144

Oracle Data Integrator Interview Questions and answers?

598

How do I start mongodb in ubuntu?

how can you perform lookup range in lookup stage expalin in detail?

1881

How to return top 5 rows in oracle?

985

Why is mongodb?

What are the advantages of microsoft access?

831

Can you tell a way to know the number of days between the two given dates in php?

1011

What is replication? : sql server DBA

1102

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