What is difference between table space and shchema

what is difference between table space and shchema ?

784633 wrote:
so each user has it own space of tables - schema ?yes, but let's clarify a bit ....
The "schema" is the collection of all objects owned by a particular user. So if user SCOTT creates two tables, EMP and DEPT, and a view EMP_RPT, and a procedure GET_MY_EMP, those objects (tables, views, procedures) collectively make up the SCOTT schema.
Those objects will be physically stored in a tablespace.
A tablespace is a named collection of data files. So tablespace USERS will be made up of one or more data files. A specific datafile can belong to one and only one tablespace. If a tablespace has more than one data file, oracle will manage those files as a collection invisible to the application - much like the OS or disk subsystem handles striping across multiple physical disks.
A specific object in the SCOTT schema can exist in only one tablespace, but not all objects of the schema have to be in the same tablespace. Likewise a tablespace can contain objects from multiple schemas.
and can one user to access tables of other users?As others have said - FRED can access tables belonging to SCOTT as long has SCOTT has granted that access to FRED.

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    SAP Seniors,
    Can you please let me know what is difference between sy-index and sy-tabix.
    I read the SAP help, it is confusing for me. it looks like both are same from help. please help me.
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    HI,
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    SY-TABIX
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    APPEND sets SY-TABIX to the index of the last line of the table, that is, it contains the overall number of entries in the table.
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    SY-INDEX
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  • What is difference between sy-index and sy-tabix and where both are using ?

    what is difference between sy-index and sy-tabix and where both are using ?

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    sy-tabix is in Internal table, current line index. So it can only be used while looping at the internal table.
    sy-index is in Loops, number of current pass. This you can use in other loop statements also (like do-enddo loop, while-endwhile)
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    SY-TABIX is a counter for LOOP...ENDLOOP, READ TABLE...
    Here is an example from which you can understand the difference between sy-tabix and sy-index.
    Itab is an internal table with the following data in it.
    id Name
    198 XYZ
    475 ABC
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    loop at itab where id > 300.
    write :/ itab-id, itab-name , sy-tabix, sy-index.
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    545 PQR 3 2
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    sy-index gives the no of times of loop passes.
    So, for the first record in the output (475 ABC), 2 is the index of the record in internal table and as it is first time loop pass occured, sy-index value is 1.
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  • Re: what is difference between sap locking and database locking

    hi,
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    EXPORTING
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              mandt     = sy-mandt
              matnr     = 'SOU-1'.
    IF sy-subrc = 0.
      WRITE: 'IT IS unlocked'.
    ENDIF.

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    Database Locks: The database system automatically sets database locks when it receives change statements (INSERT, UPDATE, MODIFY, DELETE) from a program. Database locks are physical locks on the database entries affected by these statements. You can only set a lock for an existing database entry, since the lock mechanism uses a lock flag in the entry. These flags are automatically deleted in each database commit. This means that database locks can never be set for longer than a single database LUW; in other words, a single dialog step in an R/3 application program.
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    bye

    ABAP programming
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    http://venus.imp.mx/hilario/Libros/TeachYrslfAbap4/index.htm
    http://help.sap.com/saphelp_47x200/helpdata/en/d1/802cfc454211d189710000e8322d00/frameset.htm
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  • What is difference between Shared ,Exclusive and Exclusive but not commulat

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    please go through these links:
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    http://help.sap.com/saphelp_nw04/helpdata/en/af/22ab01dd0b11d1952000a0c929b3c3/frameset.htm
    http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eeb2446011d189700000e8322d00/frameset.htm
    http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eebf446011d189700000e8322d00/frameset.htm
    http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eed9446011d189700000e8322d00/frameset.htm
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