IT Goverment

Personal Assignment 1

Session 2

Mr. Bob is an IT director at Trust Oil and Gas, a medium-sized petrochemical company based in Houston. It also has operations in the Gulf of Mexico and in South America. Mr. Bob is in charge of the network infrastructure, including routers and switches. His group includes personnel who can install and configure Cisco routers and switches.

The Trust Oil and Gas CIO wants to begin migrating from the voice network to an Unified Communications (UC) solution to reduce circuit and management costs. Existing data WAN circuits have 50 percent utilization or less but spike up to 80 percent when sporadic FTP transfers occur.

Mr. Bob hands you the diagram shown in Figure 1. The exiting data network includes 35 sites with approximately 30 people at each site. The network is Multiprotocol Label Switching (MPLS) WAN, with approximately 200 people at the headquarters. The WAN links range from 384-kbps circuits to T1 speeds. Remote-site applications include statisti- cal files and graphical-site diagrams that are transferred using FTP from remote sites to the headquarters.

Figure 1. Trust Oil and Gas Current Network

Mr. Bob wants a UC solution that manages the servers at headquarters but still provides redundancy or failover at the remote site. He mentions that he is concerned that the FTP traffic might impact the VoIP traffic. He wants to choose a site to implement a test before implementing UC at all sites.

The following questions/directives refer to this case study:

1. What are the business requirements for Trust Oil and Gas?
2. Are there any business-cost constraints?
3. What are the network’s technical requirements?
4. What are the network’s technical constraints?
5. Approximately how many IP phones should the network support?
6. What type of UC architecture should you propose?
7. What quality of service (QoS) features would you propose for the WAN?
8. What PoE recommendations would you make?
9. Would you propose a prototype or a pilot?
10. What solution do you suggest for voice redundancy at the remote sites?
11. Diagram the proposed solution.

Dasar - dasar Query

Membuat table

Untuk membuat table minimal anda harus menentukan namanya dan tipe kolom yang anda inginkan. Sintaks yang paling sederhana (tanpa ada definisi lain) adalah :
CREATE TABLE nama_tbl
(kolom1 tipekolom1(),kolom2 tipekolom2(), …)

Menghapus table

Untuk menghapus table dalam database tertentu. Jika dilakukan maka semua isi, indeks dan atribut lain akan terhapus.
Sintaksnya :
DROP TABLE nama_tbl

Melihat informasi table

Untuk melihat table apa saja yang ada di database tertentu.
Sintaksnya :
SHOW TABLES FROM nama_db

Sedangkan untuk melihat deskripsi table atau informasi tentang kolom gunakan sintaks :
DESC nama_tbl nama_kolom
atau SHOW COLUMNS FROM nama_tbl FROM nama_db

Mendapatkan atau menampilkan informasi dari table
Untuk menampilkan isi table dengan option-option tertentu. Misalnya untuk menampilkan seluruh isi table digunakan :
SELECT * FROM nama_tbl
Untuk menampilkan kolom-kolom tertentu saja :
SELECT kolom1,kolom2,… FROM nama_tbl
Untuk menampilkan isi suatu kolom dengan kondisi tertentu
SELECT kolom1 FROM nama_tbl WHERE kolom2=isikolom

untuk mengetahui tabel apa saja yang ada dalam database tersebut
select * from INFORMATION_SCHEMA.TABLES  where TABLE_TYPE = 'BASE TABLE'

Untuk mengetahui dalam tabel tersebut terdapat columns apa saja
select * from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME = 'Sektor_Ekonomi'

Replace Karakter

select replace(replace(title, '.', ''), '-', '')  as Kode  from [003_personaldata] where nopegawai ='11i029'

Get Query Insert from Table

Create PROC [dbo].[sp_generate_inserts]
(
    @table_name varchar(776),        
    @target_table varchar(776) = NULL,
    @include_column_list bit = 1,      
    @from varchar(800) = NULL,       
    @include_timestamp bit = 0,       
    @debug_mode bit = 0,          
    @owner varchar(64) = NULL,      
    @ommit_images bit = 0,      
    @ommit_identity bit = 0,      
    @top int = NULL,          
    @cols_to_include varchar(8000) = NULL,  
    @cols_to_exclude varchar(8000) = NULL,
    @disable_constraints bit = 0,  
    @ommit_computed_cols bit = 0          
)
AS
BEGIN

SET NOCOUNT ON

--Making sure user only uses either @cols_to_include or @cols_to_exclude
IF ((@cols_to_include IS NOT NULL) AND (@cols_to_exclude IS NOT NULL))
    BEGIN
        RAISERROR('Use either @cols_to_include or @cols_to_exclude. Do not use both the parameters at once',16,1)
        RETURN -1 --Failure. Reason: Both @cols_to_include and @cols_to_exclude parameters are specified
    END

--Making sure the @cols_to_include and @cols_to_exclude parameters are receiving values in proper format
IF ((@cols_to_include IS NOT NULL) AND (PATINDEX('''%''',@cols_to_include) = 0))
    BEGIN
        RAISERROR('Invalid use of @cols_to_include property',16,1)
        PRINT 'Specify column names surrounded by single quotes and separated by commas'
        PRINT 'Eg: EXEC sp_generate_inserts titles, @cols_to_include = "''title_id'',''title''"'
        RETURN -1 --Failure. Reason: Invalid use of @cols_to_include property
    END

IF ((@cols_to_exclude IS NOT NULL) AND (PATINDEX('''%''',@cols_to_exclude) = 0))
    BEGIN
        RAISERROR('Invalid use of @cols_to_exclude property',16,1)
        PRINT 'Specify column names surrounded by single quotes and separated by commas'
        PRINT 'Eg: EXEC sp_generate_inserts titles, @cols_to_exclude = "''title_id'',''title''"'
        RETURN -1 --Failure. Reason: Invalid use of @cols_to_exclude property
    END

IF (PARSENAME(@table_name,3)) IS NOT NULL
    BEGIN
        RAISERROR('Do not specify the database name. Be in the required database and just specify the table name.',16,1)
        RETURN -1 --Failure. Reason: Database name is specified along with the table name, which is not allowed
    END

IF @owner IS NULL
    BEGIN
        IF ((OBJECT_ID(@table_name,'U') IS NULL) AND (OBJECT_ID(@table_name,'V') IS NULL))
            BEGIN
                RAISERROR('User table or view not found.',16,1)
                PRINT 'You may see this error, if you are not the owner of this table or view. In that case use @owner parameter to specify the owner name.'
                PRINT 'Make sure you have SELECT permission on that table or view.'
                RETURN -1 --Failure. Reason: There is no user table or view with this name
            END
    END
ELSE
    BEGIN
        IF NOT EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = @table_name AND (TABLE_TYPE = 'BASE TABLE' OR TABLE_TYPE = 'VIEW') AND TABLE_SCHEMA = @owner)
            BEGIN
                RAISERROR('User table or view not found.',16,1)
                PRINT 'You may see this error, if you are not the owner of this table. In that case use @owner parameter to specify the owner name.'
                PRINT 'Make sure you have SELECT permission on that table or view.'
                RETURN -1 --Failure. Reason: There is no user table or view with this name      
            END
    END

--Variable declarations
DECLARE        @Column_ID int,       
        @Column_List varchar(8000),
        @Column_Name varchar(128),
        @Start_Insert varchar(786),
        @Data_Type varchar(128),
        @Actual_Values varchar(8000),    --This is the string that will be finally executed to generate INSERT statements
        @IDN varchar(128)        --Will contain the IDENTITY column's name in the table

--Variable Initialization
SET @IDN = ''
SET @Column_ID = 0
SET @Column_Name = ''
SET @Column_List = ''
SET @Actual_Values = ''

IF @owner IS NULL
    BEGIN
        SET @Start_Insert = 'INSERT INTO ' + '[' + RTRIM(COALESCE(@target_table,@table_name)) + ']'
    END
ELSE
    BEGIN
        SET @Start_Insert = 'INSERT ' + '[' + LTRIM(RTRIM(@owner)) + '].' + '[' + RTRIM(COALESCE(@target_table,@table_name)) + ']'       
    END


--To get the first column's ID

SELECT    @Column_ID = MIN(ORDINAL_POSITION)   
FROM    INFORMATION_SCHEMA.COLUMNS (NOLOCK)
WHERE     TABLE_NAME = @table_name AND
(@owner IS NULL OR TABLE_SCHEMA = @owner)



--Loop through all the columns of the table, to get the column names and their data types
WHILE @Column_ID IS NOT NULL
    BEGIN
        SELECT     @Column_Name = QUOTENAME(COLUMN_NAME),
        @Data_Type = DATA_TYPE
        FROM     INFORMATION_SCHEMA.COLUMNS (NOLOCK)
        WHERE     ORDINAL_POSITION = @Column_ID AND
        TABLE_NAME = @table_name AND
        (@owner IS NULL OR TABLE_SCHEMA = @owner)



        IF @cols_to_include IS NOT NULL --Selecting only user specified columns
        BEGIN
            IF CHARINDEX( '''' + SUBSTRING(@Column_Name,2,LEN(@Column_Name)-2) + '''',@cols_to_include) = 0
            BEGIN
                GOTO SKIP_LOOP
            END
        END

        IF @cols_to_exclude IS NOT NULL --Selecting only user specified columns
        BEGIN
            IF CHARINDEX( '''' + SUBSTRING(@Column_Name,2,LEN(@Column_Name)-2) + '''',@cols_to_exclude) <> 0
            BEGIN
                GOTO SKIP_LOOP
            END
        END

        --Making sure to output SET IDENTITY_INSERT ON/OFF in case the table has an IDENTITY column
        IF (SELECT COLUMNPROPERTY( OBJECT_ID(QUOTENAME(COALESCE(@owner,USER_NAME())) + '.' + @table_name),SUBSTRING(@Column_Name,2,LEN(@Column_Name) - 2),'IsIdentity')) = 1
        BEGIN
            IF @ommit_identity = 0 --Determing whether to include or exclude the IDENTITY column
                SET @IDN = @Column_Name
            ELSE
                GOTO SKIP_LOOP          
        END
      
        --Making sure whether to output computed columns or not
        IF @ommit_computed_cols = 1
        BEGIN
            IF (SELECT COLUMNPROPERTY( OBJECT_ID(QUOTENAME(COALESCE(@owner,USER_NAME())) + '.' + @table_name),SUBSTRING(@Column_Name,2,LEN(@Column_Name) - 2),'IsComputed')) = 1
            BEGIN
                GOTO SKIP_LOOP                  
            END
        END
      
        --Tables with columns of IMAGE data type are not supported for obvious reasons
        IF(@Data_Type in ('image'))
            BEGIN
                IF (@ommit_images = 0)
                    BEGIN
                        RAISERROR('Tables with image columns are not supported.',16,1)
                        PRINT 'Use @ommit_images = 1 parameter to generate INSERTs for the rest of the columns.'
                        PRINT 'DO NOT ommit Column List in the INSERT statements. If you ommit column list using @include_column_list=0, the generated INSERTs will fail.'
                        RETURN -1 --Failure. Reason: There is a column with image data type
                    END
                ELSE
                    BEGIN
                    GOTO SKIP_LOOP
                    END
            END

        SET @Actual_Values = @Actual_Values  +
        CASE
            WHEN @Data_Type IN ('char','varchar','nchar','nvarchar')
                THEN
                    'COALESCE('''''''' + REPLACE(RTRIM(' + @Column_Name + '),'''''''','''''''''''')+'''''''',''NULL'')'
            WHEN @Data_Type IN ('datetime','smalldatetime')
                THEN
                    'COALESCE('''''''' + RTRIM(CONVERT(char,' + @Column_Name + ',109))+'''''''',''NULL'')'
            WHEN @Data_Type IN ('uniqueidentifier')
                THEN
                    'COALESCE('''''''' + REPLACE(CONVERT(char(255),RTRIM(' + @Column_Name + ')),'''''''','''''''''''')+'''''''',''NULL'')'
            WHEN @Data_Type IN ('text','ntext')
                THEN
                    'COALESCE('''''''' + REPLACE(CONVERT(char(8000),' + @Column_Name + '),'''''''','''''''''''')+'''''''',''NULL'')'                  
            WHEN @Data_Type IN ('binary','varbinary')
                THEN
                    'COALESCE(RTRIM(CONVERT(char,' + 'CONVERT(int,' + @Column_Name + '))),''NULL'')'
            WHEN @Data_Type IN ('timestamp','rowversion')
                THEN
                    CASE
                        WHEN @include_timestamp = 0
                            THEN
                                '''DEFAULT'''
                            ELSE
                                'COALESCE(RTRIM(CONVERT(char,' + 'CONVERT(int,' + @Column_Name + '))),''NULL'')'
                    END
            WHEN @Data_Type IN ('float','real','money','smallmoney')
                THEN
                    'COALESCE(LTRIM(RTRIM(' + 'CONVERT(char, ' +  @Column_Name  + ',2)' + ')),''NULL'')'
            ELSE
                'COALESCE(LTRIM(RTRIM(' + 'CONVERT(char, ' +  @Column_Name  + ')' + ')),''NULL'')'
        END   + '+' +  ''',''' + ' + '
      
        --Generating the column list for the INSERT statement
        SET @Column_List = @Column_List +  @Column_Name + ','  

        SKIP_LOOP: --The label used in GOTO

        SELECT     @Column_ID = MIN(ORDINAL_POSITION)
        FROM     INFORMATION_SCHEMA.COLUMNS (NOLOCK)
        WHERE     TABLE_NAME = @table_name AND
        ORDINAL_POSITION > @Column_ID AND
        (@owner IS NULL OR TABLE_SCHEMA = @owner)


    --Loop ends here!
    END

--To get rid of the extra characters that got concatenated during the last run through the loop
SET @Column_List = LEFT(@Column_List,len(@Column_List) - 1)
SET @Actual_Values = LEFT(@Actual_Values,len(@Actual_Values) - 6)

IF LTRIM(@Column_List) = ''
    BEGIN
        RAISERROR('No columns to select. There should at least be one column to generate the output',16,1)
        RETURN -1 --Failure. Reason: Looks like all the columns are ommitted using the @cols_to_exclude parameter
    END

--Forming the final string that will be executed, to output the INSERT statements
IF (@include_column_list <> 0)
    BEGIN
        SET @Actual_Values =
            'SELECT ' +
            CASE WHEN @top IS NULL OR @top < 0 THEN '' ELSE ' TOP ' + LTRIM(STR(@top)) + ' ' END +
            '''' + RTRIM(@Start_Insert) +
            ' ''+' + '''(' + RTRIM(@Column_List) +  '''+' + ''')''' +
            ' +''VALUES(''+ ' +  @Actual_Values  + '+'')''' + ' ' +
            COALESCE(@from,' FROM ' + CASE WHEN @owner IS NULL THEN '' ELSE '[' + LTRIM(RTRIM(@owner)) + '].' END + '[' + rtrim(@table_name) + ']' + '(NOLOCK)')
    END
ELSE IF (@include_column_list = 0)
    BEGIN
        SET @Actual_Values =
            'SELECT ' +
            CASE WHEN @top IS NULL OR @top < 0 THEN '' ELSE ' TOP ' + LTRIM(STR(@top)) + ' ' END +
            '''' + RTRIM(@Start_Insert) +
            ' '' +''VALUES(''+ ' +  @Actual_Values + '+'')''' + ' ' +
            COALESCE(@from,' FROM ' + CASE WHEN @owner IS NULL THEN '' ELSE '[' + LTRIM(RTRIM(@owner)) + '].' END + '[' + rtrim(@table_name) + ']' + '(NOLOCK)')
    END  

--Determining whether to ouput any debug information
IF @debug_mode =1
    BEGIN
        PRINT '/*****START OF DEBUG INFORMATION*****'
        PRINT 'Beginning of the INSERT statement:'
        PRINT @Start_Insert
        PRINT ''
        PRINT 'The column list:'
        PRINT @Column_List
        PRINT ''
        PRINT 'The SELECT statement executed to generate the INSERTs'
        PRINT @Actual_Values
        PRINT ''
        PRINT '*****END OF DEBUG INFORMATION*****/'
        PRINT ''
    END
      
PRINT '--INSERTs generated by ''sp_generate_inserts'' stored procedure written by Vyas'
PRINT '--Build number: 22'
PRINT '--Problems/Suggestions? Contact Vyas @ vyaskn@hotmail.com'
PRINT '--http://vyaskn.tripod.com'
PRINT ''
PRINT 'SET NOCOUNT ON'
PRINT ''


--Determining whether to print IDENTITY_INSERT or not
IF (@IDN <> '')
    BEGIN
        PRINT 'SET IDENTITY_INSERT ' + QUOTENAME(COALESCE(@owner,USER_NAME())) + '.' + QUOTENAME(@table_name) + ' ON'
        PRINT 'GO'
        PRINT ''
    END


IF @disable_constraints = 1 AND (OBJECT_ID(QUOTENAME(COALESCE(@owner,USER_NAME())) + '.' + @table_name, 'U') IS NOT NULL)
    BEGIN
        IF @owner IS NULL
            BEGIN
                SELECT     'ALTER TABLE ' + QUOTENAME(COALESCE(@target_table, @table_name)) + ' NOCHECK CONSTRAINT ALL' AS '--Code to disable constraints temporarily'
            END
        ELSE
            BEGIN
                SELECT     'ALTER TABLE ' + QUOTENAME(@owner) + '.' + QUOTENAME(COALESCE(@target_table, @table_name)) + ' NOCHECK CONSTRAINT ALL' AS '--Code to disable constraints temporarily'
            END

        PRINT 'GO'
    END

PRINT ''
PRINT 'PRINT ''Inserting values into ' + '[' + RTRIM(COALESCE(@target_table,@table_name)) + ']' + ''''


--All the hard work pays off here!!! You'll get your INSERT statements, when the next line executes!
EXEC (@Actual_Values)

PRINT 'PRINT ''Done'''
PRINT ''


IF @disable_constraints = 1 AND (OBJECT_ID(QUOTENAME(COALESCE(@owner,USER_NAME())) + '.' + @table_name, 'U') IS NOT NULL)
    BEGIN
        IF @owner IS NULL
            BEGIN
                SELECT     'ALTER TABLE ' + QUOTENAME(COALESCE(@target_table, @table_name)) + ' CHECK CONSTRAINT ALL'  AS '--Code to enable the previously disabled constraints'
            END
        ELSE
            BEGIN
                SELECT     'ALTER TABLE ' + QUOTENAME(@owner) + '.' + QUOTENAME(COALESCE(@target_table, @table_name)) + ' CHECK CONSTRAINT ALL' AS '--Code to enable the previously disabled constraints'
            END

        PRINT 'GO'
    END

PRINT ''
IF (@IDN <> '')
    BEGIN
        PRINT 'SET IDENTITY_INSERT ' + QUOTENAME(COALESCE(@owner,USER_NAME())) + '.' + QUOTENAME(@table_name) + ' OFF'
        PRINT 'GO'
    END

PRINT 'SET NOCOUNT OFF'


SET NOCOUNT OFF
RETURN 0 --Success. We are done!
END


GO