GeekInterview.com
  I am new, Sign me up!
 
GeekInterview.com  >  Interview Questions  >  Mainframe  >  COBOL
Go To First  |  Previous Question  |  Next Question 
 COBOL  |  Question 155 of 162    Print  
How COBOL FLAT files(Index,Sequential) are very secure for huge data?If not, How will you migrate with any Database with Frond end COBOL?

  
Total Answers and Comments: 1 Last Update: February 09, 2009     Asked by: gilbat82 
  
 Sponsored Links

 
 Best Rated Answer

No best answer available. Please pick the good answer available or submit your answer.
February 08, 2009 23:57:53   #1  
rramaiah1 Member Since: February 2009   Contribution: 3    

RE: How COBOL FLAT files(Index,Sequential) are very secure for huge data?If not, How will you migrate with any Database with Frond end COBOL?
Well if you are using flat file you have advantage as well as disadvantages.
Advantage -It is Secure Physically edited.
Disadvantage - Logically speaking performance is slow difficult to find the particular record.

 
Is this answer useful? Yes | NoAnswer is useful 0   Answer is not useful 1Overall Rating: -1    

 Related Questions

There are at least five differences: COBOL II supports structured programming by using in line PERFORMs and explicit scope terminators, it introduces new features (EVALUATE, SET .. TO TRUE, CALL .. BY 
Latest Answer : The END Delimiter --> END-READ                               END-PERFORM                              ...

A scope terminator brackets its preceding verb, eg. IF .. END-IF, so that all statements between the verb and its scope terminator are grouped together. Other common COBOL II verbs are READ, PERFORM, EVALUATE, 
Latest Answer : terminators like END-PEROFRM END-EVALUTE are called explicit scope terminaotr available in COBOL 85. ...

The PERFORM and END-PERFORM statements bracket all COBOL II statements between them. The COBOL equivalent is to PERFORM or PERFORM THRU a paragraph. In line PERFORMs work as long as there are no internal 
Latest Answer : In In-line PERFORM the procedure name is omitted. An In-line PERFORM must be delimited by the END-PERFORM statement.SYNTAX:          PERFORM                   ...

NEXT SENTENCE gives control to the verb following the next period. CONTINUE gives control to the next verb after the explicit scope terminator. (This is not one of COBOL II's finer implementations). 
Latest Answer : Next sentence: The sentence is the collection of statements and is always end with period(.).so next sentence means the control passes to next sentence after period.e.g.: if X=3 Compute X=X-3 Next sentence End-if ...

EVALUATE can be used in place of the nested IF THEN ELSE statements.  
Latest Answer : EVALUATE statement contrusts a case structure. The explicit scope terminator for EVALUATE is END-EVALUATE. The various cases can be places between the EVALUATE and END-EVALUATE statements. Example:Here SQLCODE is a built in variable name EVALUATE SQLCODE ...

Partial list: REMARKS, NOMINAL KEY, PAGE-COUNTER, CURRENT-DAY, TIME-OF-DAY, STATE, FLOW, COUNT, EXAMINE, EXHIBIT, READY TRACE and RESET TRACE.  

The linkage section is part of a called program that 'links' or maps to data items in the calling program's working storage. It is the part of the called program where these share items 
Latest Answer : This section allows a COBOL program to receive values from JCL. Also, if you are calling a sub-program and you require some values to be passed between them, then this is the section that should be used.Thus in a short, this section allows a value to ...

A subscript is a working storage data definition item, typically a PIC (999) where a value must be moved to the subscript and then incremented or decremented by ADD TO and SUBTRACT FROM statements. An 
Latest Answer : We can use up by 1/down by 1 in Index but in Subscript we should keeping adding 1. ...

Wake up - you haven't been paying attention! It's not possible to pass an index via linkage. The index is not part of the calling programs working storage. Those of us who've made this 
Latest Answer : We can pass subscript by linkage section. index cant. ...

Explain the difference between an internal and an external sort, the pros and cons, internal sort syntax etc?
An external sort is not COBOL; it is performed through JCL and PGM=SORT. It is understandable without any code reference. An internal sort can use two different syntaxes: 1.) USING, GIVING sorts are 


 Sponsored Links

 
Related Articles

Breaking up XML into Relational Data

Breaking up XML into Relational Data While the preceding example shows how to construct an XML representation over relational data the example in this section illustrates how you can shred XML data back into relational data This reverse operation can be useful if your application works with relation
 

Querying Data with Oracle XQuery

Querying Data with Oracle XQuery Starting with Oracle Database 10g Release 2 you can take advantage of a full featured native XQuery engine integrated with the database With Oracle XQuery you can accomplish various tasks involved in developing PHP Oracle XML applications operating on any kind of dat
 

Retrieving XML Data

Retrieving XML DataTo retrieve XML data from an XMLType table you can use a SELECT SQL statement just as you would if you had to query a relational table For example to select the employee with the id set to 100 from the employees XMLType table discussed in the preceding section you might issue the
 

Using XMLType for Handling XML Data in the Database

Using XMLType for Handling XML Data in the Database Being an object type XMLType can not only be used to store XML data in the database but also to operate on that data via its built in methods Regardless of the storage model you choose XMLType provides a set of XML specific methods to operate on XM
 

Using Oracle Database for Storing, Modifying, and Retrieving XML Data

Using Oracle Database for Storing Modifying and Retrieving XML Data With Oracle XML DB you have various XML storage and XML processing options allowing you to achieve the required level of performance and scalability One of the most interesting things about Oracle XML DB is that it allows you to per
 

Performing XSLT Transformations inside the Database

Performing XSLT Transformations inside the Database Now that you have the employees XSL stylesheet stored in the database and the xmlusr schema is permitted to access the hr employees table you can create a script that will instruct the database to build an HTML page based on the data stored in hr e
 

Moving All the XML Processing into the Database

Moving All the XML Processing into the Database In the preceding example the database server performs only a part of the XML processing while the rest is still performed by the PHP engine Specifically the database server generates an employees XML document based on the records from the hr employees
 

Performing XML Processing inside the Database

Performing XML Processing inside the Database When building XML enabled applications on top of Oracle there are many advantages to performing the XML processing inside the database when compared to performing it on the client The key advantages to perform XML processing inside the database are as fo
 

ODP.NET - Techniques to Improve Performance while Retrieving Data

ODP NET Techniques to Improve Performance while Retrieving Data Performance tuning is a great subject in Oracle Volumes of books would not be enough to cover every aspect of performance tuning in Oracle However in this section we will only discuss the fundamental performance techniques while working
 

ODP.NET - Populating a Dataset with a Single Data Table

ODP NET Populating a Dataset with a Single Data Table A dataset is simply a group of data tables These data tables can be identified with their own unique names within a dataset You can also add relations between data tables available in a dataset mosgoogle The following code gives you the details o
 

About Us -  Privacy Policy -  Terms and Conditions -  Contact -  Ask Question -  Propose Category -  Site Updates 

Copyright © 2005 - 2009 GeekInterview.com. All Rights Reserved

Page copy protected against web site content infringement by Copyscape