Is there max number of Database Master Keys that can be used in a single instance of SQL Server 2005?
If I have 12 unique client databases that all need a unique Database Master Key, can this be accomplished?
Thanks ALL!
Is there a limit on number of symmetric keys/asymmetric keys/certificates that can be stored in a database?
Is there any effect on performance of the SQL Server if I have too many (few hundreds) symmetric keys in the database?
thanks
What system view do i use to determine is a database has a master key?
Thanks,
Ed
As part of a project, I'm not allowed to use foreign keys, well can't. But I have a problem with this master detail relationship (and a very simple one too).
Tables to begin with:
Invoice:
invoiceid : bigint indentity autoincrement primarykey
Detail:
invoiceid: bigint - detailnumber:bigint - desc : char20
Okay - I want to set these two tables up such than when I create a new invoice, and subsequently get the new invoiceid, and I start to add detail records to the detail table, I want the detailnumber to autoincrement when I do an SQL Insert. Right now I have detailnumber as the primary key, so when you view the detail records, it looks like:
(invoiceid, detailnumber, desc) 1,1,text - 1,2,text - 1,3,text - 2,4, text on another invoice - 3,5, text
I want it to work like:
(invoiceid, detailnumber, desc) 1,1,text - 1,2,text - 1,3,text - 2,1, text on another invoice - 3,1, text
where the invoiceid and the detail number make up the primary key.
I seem to recall you could do this is PHP before it had foreign keys & such, and I'm completely drawing a blank on this. BTW - I'm using enterprise manager to set this up, but I can use QA with a sample script to acheive the same.
I realize this may be (and probably is) off-topic here, but I can't figure out where to ask.
Thanks in advance.
I am struggling trying to clean some data and identify duplicate records. I used fuzzy grouping in SSIS and provided back a series of groups. The issue is some of the individual records can appear in multiple groups (so in reality the groups should be combined). This is best explained with an example:
Original Data
key1 key2
647942600014
647942285437
2324662490640
2324662285437
2324662066128
2222 2285437
2222 1111111
9999 1111111
9999 2222222
Should look like:
22222600014
22222285437
22222490640
22222066128
22221111111
22222222222
I only choose 2222 as the surviving key because it was the smallest number. I really do not care which number remains as long as it is the same across.
I tried playing with self joins between the tables but have had no success.
I am using Sql Server 2008 and the number of records could 500K to 1MM.
I need some help for designing the IDs / Primary keys for some master tables in my database. Following are master tables. Client_Master, Buyer_Master & Seller_Master; I want to set Client_Id, Buyer_Id & Seller_Id as their respective primary keys and they should have following properties
Client_Id :- a) should be auto-incrementing value, b) unique & c)should be of the format – CLXXXXXX, where “CL” {Constant start characters} & “X” {any number 0-9}
Similarly::
Buyer_Id :- BYXXXXXX
Seller_Id :- SLXXXXXX
We are implementing the database in MS-SQL 2005 & MySQL
Can anyone help me find a solution to this, especially in MS-SQL.
Now, I checked and verified that my backup version of SQL Server is the same as the version installed on the computer I'm restoring too.
I have SQL Server on a production machine that I backed up and want to test a full restore on a dev machine to make sure it will work when I need it to.
Now that I've run the restore command on my tape backup and go to restart the SQL server service I receive:
Configuration block version 0 is not a valid version number. SQL Server is exiting. Restore the master database or reinstall.
I'm afraid I don't understand why this is happening. If the builds are the same, then shouldn't restoring the MASTER database have worked normally and I'd be able to restart the service now?
Any thoughts or suggestions?
I understand the number of foreign keys allowed is restricted by the DBMS Iuse.In a general relational schema design perspective how many foreign keys atable shall have?If I have large number of foreign keys what anamolies it will lead to?Is this crucial to identify all the foriegn key relationships for a table?Vinodh
View 1 Replies View RelatedUsing SQL Server Express 2005, I have two databases. AppDB - The main application database.GeoDB - A somewhat static ZIP code / states / other geographic stuff databaseI need to have some foreign key columns in tables in AppDB reference columns in the GeoDB database tables. Eventually other application database besides AppDB will be doing the same thing in our infrastructure. After googling and reading for days, here is what I
think I know:You cannot create foreign keys that reference tables in another database in SQL Server.You
cannot create foreign keys that reference columns in a view, and you definitely cannot make an index on a view that has base tables in another database.You can create a trigger that references tables in another database, but this can be flaky? (nested/recursive trigger problem).SQLServer
2005 supports multiple schemas within the same database. Maybe I should logically separate my databases this way? Seems like it would be a tough solution to manage since I already have some databases live in production that will eventually use this 'static' GeoDB. Also, seems like it
wouldn't be as portable as keeping the GeoDB info in its own database,
but maybe I'm being too software engineer-ish here - afraid of low
cohesion, high coupling.I will greatly appreciate any advice I can get, or any more options I am missing. Thanks,Adam Nofsingerucnmedia.com
Hello again,
I'm going through my tables and rewriting them so that I can create relationship-based constraints and create foreign keys among my tables. I didn't have a problem with a few of the tables but I seem to have come across a slightly confusing hiccup.
Here's the query for my Classes table:
Code:
CREATE TABLE Classes
(
class_id
INT
IDENTITY
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
class_title
VARCHAR(50)
NOT NULL,
class_grade
SMALLINT
NOT NULL
DEFAULT 6,
class_tardies
SMALLINT
NOT NULL
DEFAULT 0,
class_absences
SMALLINT
NOT NULL
DEFAULT 0,
CONSTRAINT Teacher_instructs_ClassFKIndex1 FOREIGN KEY (teacher_id)
REFERENCES Users (user_id)
)
This statement runs without problems and I Create the relationship with my Users table just fine, having renamed it to teacher_id. I have a 1:n relationship between users and tables AND an n:m relationship because a user can be a student or a teacher, the difference is one field, user_type, which denotes what type of user a person is. In any case, the relationship that's 1:n from users to classes is that of the teacher instructing the class. The problem exists when I run my query for the intermediary table between the class and the gradebook:
Code:
CREATE TABLE Classes_have_Grades
(
class_id
INT
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
grade_id
INT
NOT NULL,
CONSTRAINT Grades_for_ClassesFKIndex1 FOREIGN KEY (grade_id)
REFERENCES Grades (grade_id),
CONSTRAINT Classes_have_gradesFKIndex2 FOREIGN KEY (class_id, teacher_id)
REFERENCES Classes (class_id, teacher_id)
)
Query Analyzer spits out: Quote: Originally Posted by Query Analyzer There are no primary or candidate keys in the referenced table 'Classes' that match the referencing column list in the foreign key 'Classes_have_gradesFKIndex2'. Now, I know in SQL Server 2000 you can only have one primary key. Does that mean I can have a multi-columned Primary key (which is in fact what I would like) or does that mean that just one field can be a primary key and that a table can have only the one primary key?
In addition, what is a "candidate" key? Will making the other fields "Candidate" keys solve my problem?
Thank you for your assistance.
what the best practice is for creating indexes on columns that are foreign keys to the primary keys of other tables. For example:
[Schools] [Students]
---------------- -----------------
| SchoolId PK|<-. | StudentId PK|
| SchoolName | '--| SchoolId |
---------------- | StudentName |
-----------------
The foreign key above is as:
ALTER TABLE [Students] WITH CHECK ADD CONSTRAINT [FK_Students_Schools]
FOREIGN KEY([SchoolId]) REFERENCES [Schools] ([SchoolId])
What kind of index would ensure best performance for INSERTs/UPDATEs, so that SQL Server can most efficiently check the FK constraints? Would it be simply:
CREATE INDEX IX_Students_SchlId ON Students (SchoolId)
Or
CREATE INDEX IX_Students_SchlId ON Students (SchoolId, StudentId)
In other words, what's best practice for adding an index which best supports a Foreign Key constraint?
I had to to relocate the database log file and I issued an Alter database command but by mistake I put a space in the file name as below. The space is at the beginning file name. Now I am unable get the database loaded to SQL Server. The database has 2 replications configured, so deleting and re-attaching the database means the replication needs to be re-configured. Is there an alternative way to issue a command to update the database FILENAME ? Not sure if this can be edited in master database (sys files).
ALTER DATABASE [User_DB]
MODIFY FILE (NAME = User_DB_log, FILENAME = 'I:SQLLogs User_DB_log.ldf')
GO
Pls let me know How I generate script for All primary keys and foreign keys in a table. Thereafter that can be used to add primary keys and foreign keys in another databse with same structure.
Also how I script default and other constraints of a table?
Cn not do anything with my sql server, everything i trt to do i get this message, user does not have permision, etc, ,
I am running windows Vista Business, SQL SERVER 2005
so what going on here
got rid of my error about user login rights, it was all working yesterday. but for some reason i now get this error CREATE DATABASE permission denied in database 'master'.
An attempt to attach an auto-named database for file C:InetpubwwwrootsqlSiteApp_DatasiteDB.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: CREATE DATABASE permission denied in database 'master'.
An attempt to attach an auto-named database for file C:InetpubwwwrootsqlSiteApp_DatasiteDB.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException (0x80131904): CREATE DATABASE permission denied in database 'master'.
An attempt to attach an auto-named database for file C:InetpubwwwrootsqlSiteApp_DatasiteDB.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.]
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734995
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1838
System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +33
System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +628
System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +170
System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +359
System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28
System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424
System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +496
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105
System.Data.SqlClient.SqlConnection.Open() +111
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +121
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +137
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +83
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1770
System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +17
System.Web.UI.WebControls.DataBoundControl.PerformSelect() +149
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +70
System.Web.UI.WebControls.GridView.DataBind() +4
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82
System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +69
System.Web.UI.Control.EnsureChildControls() +87
System.Web.UI.Control.PreRenderRecursiveInternal() +41
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1360
i have this in my web.config file <connectionStrings> <add name="ConnectionStringTest" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=C:InetpubwwwrootsqlSiteApp_DatasiteDB.mdf;Integrated Security=SSPI;Connect Timeout=30;User Instance=False" providerName="System.Data.SqlClient" /> </connectionStrings> <appSettings /> <system.web> <!-- Set compilation debug="true" to insert debugging symbols into the compiled page. Because this affects performance, set this value to true only during development. --> <compilation debug="true" /> <identity impersonate="true"/> and my asp connection string is <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionStringTest %>" SelectCommand="SELECT [entryID], [compID], [emailAddy], [answer] FROM [entry]"></asp:SqlDataSource> if i set user instance to true i get a user permission error. it says on sql server management that i have dbo rights on my database, but it wont let me put datareader or write on this login. any ideas? its driving me insane
I have installed new SQLServer2012 instance and my domain user have sysadmin privileges on this instance. I have a restore procedure and it will execute WITH EXECUTE AS 'domainmy username', for all the developers have exec permissions to this procedure. But newly installed server this procedure was failing with the following message. But the same procedure executing fine on other servers.
Msg 262, Level 14, State 1, Line 1
CREATE DATABASE permission denied in database 'master'.
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
whenenver i run cold fusion, it automatically gets my tables out of the master database instead of the new one i have created. i've added a user that has a default to the new database instead of the master, but i need to know how to use that new user correctly, and what i will need to do once i start adding more databases so that cold fusion will go to the appropriate database and not to the master.
View 3 Replies View RelatedHi,
I'm using Visual Studio 2005 Pro and SQLExpress that comes with it.
I have my program running fine in XP Pro OS using a window user "Glen" (Computer administrator) with Administrator rights. This means that I installed VS 2005 using this window user "Glen"
I created another windows user "TestUser" (Limited account) in the same physical PC.
I tried to run the program and on the part that I need to access SQL table, I got the error [CREATE DATABASE permission denied in database 'master']
At the same time while using "TestUser" and running sqlcmd (to check if I can connect to SQL), I also got error HResult 0x2, Level 16, State 1.
I read alot on MSDN discussions and related links but it seems that I can't get the solution that I need.
SO HERE ARE MY QUESTIONS :
1. Am I allowed to run my program using user "TestUser" since SQL is installed using "Glen" windows user?
2. Do I need to add access rights to "TestUser" to allow the user to have CREATE rights? (Note : for security reason, I can add other access rights except Administrator)
Thanks in advance for all you help.
Can somebody explain to me how to best do inserts where you have primary keys and foreign keys.l'm battling.
Is there an article on primary keys/Pk ?
Hello!I have a table A with fields id,startdate and other fields. id and startdateare in the primary key.In the table B I want to introduce a Foreign key to field id of table A.Is this possible? If yes, which kind of key I have to build in table A?Thx in advance,Fritz
View 6 Replies View RelatedHello!
I am Paolo, a 3rd year college student taking up computer science. I am currently doing a project as part of my on the job training but am stumped! Maybe you can help! ;)
software used:
Sql Server 2000
The facts:
1. there is a CARS database on server 1 (carId, carDescription)
2. there is an issues and problems tracking database on server 2 (problemId, problemDescription)
3. I am supposed to extend the functionality of the issues and problems tracking database to include the cars. i.e. the database on server 2 should look like: (problemID, problemDescription, carId)
The question:
Is there a way i can put a foreign key constraint on server2's carID so that i can only input carIDs which are in the CARS table on server1?
The only way i can think of is to make a new table in server1 and just drag a froeign key relationship in enterprise manager's designer, but my boss doesnt want to keep both information on the same db!
Any ideas?
Many thanks!
I've played with various configurations of the MS SQL Server encryption functionality, and come across an embarrassingly easy question that I cannot seem to resolve. How do I retrieve the actual symmetric and asymmetric keys out of the database?
I'd like to explore the possibility of off-loading the encryption/decryption work from the database server to a load-balanced pool of servers. For this model to work the pool would need access to the keys. The symmetric keys currently are generated with the command...
create symmetric key EncryptionKey211
with algorithm = AES_256
ENCRYPTION BY certificate CreditCardCert
Am I missing something obvious here?
Hi,
I've been trying to export a whole database from one server to another (connected through a local network) but the keys always get lost: when I open the diagrame I can actually see them just before the tables names appear. I've tried inserting the primary keys for each table manually with the export wizard, which took me some time, but no relations were exported. Any way of doing this automatically?
Sometime during the night last night some user account permissions were "lost". Am I right to think that restoring the master database would be the way to go? We have a 2 node 2012 cluster and I stop the cluster resource and start the db in single user mode from the active node. Somehow the sharepoint farm is still trying to connect so I can't get logged in single user. What method could I use to stop users from connecting when I don't have access to the sharepoint farm.
View 8 Replies View RelatedI need help setting up my primary keys for a database table. Suppose I have two tables, as listed below. The first one isa table of students and the course they are enrolled in. The second table is a table of test scores. Never mind that this could be designed better. Please just using my design as an example, I need help.
First table - Student Table
Student Id Student Course Building1 Joe Math101 Primus Hall2 Jake Engl103 Indigo Hall3 Mary Art107 Money Hall
So my question is the following. On my second table below, can I just haveone Key as the Primary key? Just like in the first table. I will have a primary key named "TestId"
If so, how do I set up my table so that the values in the "TestId"table will be automatically generated upon inserting into the Testscore table.
Second table - Tests Score Table:
TestId StudentId TestScore Date 1 1 99 9/1/07 2 1 100 9/15/07 3 1 88 9/16/07 4 2 99 9/1/07 5 2 100 9/15/07 6 2 88 9/16/07 7 3 79 9/1/07 8 3 100 9/15/07 9 3 100 9/16/07
Hi!
I have seen two approaches to primary keys. First one - and it is like
default - is to use surrogate key as primary key. For each table I will
create some autonumeric field hat cannot be changed once it has value.
Some materials refer to this key also as technical primary key. I
design my databases this way usually.
The other approach is to create primary key of fields that make primary
key on database logical model. This approach is not so popular and has
some side effects like a little bit clumpsy looking joins and
unconvenient use in applications.
Question: What is the main idea behind second approach? Or how explain their preference database designers who are using second approach?
suppose if we do not have FK then what kind of advantage we could not avail. we can fetch data from two table by creating a relation in sql.....then why FK is required.
View 10 Replies View RelatedI have a database column that stores a comma delimited list of foreignkeys. Would someone show me how to do a join using the values from alist stored within a record?For example, a record in tbl_cds.genre_id might have a value of "2,5, 6" corresponding to genre_ids 2 , 5 and 6. I want to jointbl_cds.genre_id to tbl_genre.genre_id using the values in that datafield.It seems I need a loop like this:SELECT * FROM tbl_cdsWHEREBegin Looptbl_cds.genre_id[i] = tbl_genre.genre_idEnd Loop.Would someone give me the correct syntax?Is there an alternative method that would create less overhead?Sorry for such a novice post.
View 2 Replies View RelatedI set up a basic Transfer Database task (online, copy) to copy a DB. It works great except for the fact that it isn't transferring the PK's and FK's. It also looks like it did not transfer the views. Any idea why? Anything else the Transfer Database task doesn't actually transfer?
View 2 Replies View RelatedHi Y'all,
What are the advantages of placing stored procedures in the master database? Can i always use all the database-names on the instance?
Thanks!
Hi,
I have a question regarding master database.I know if a master database is
corrupt we need to rebuild the master.One of the guys suggested us to
maintain a copy of master data file and log file in diffrent directory and
when master database is corrupt we can copy the files to the actual location
and restart the sql server and this should fix the issue and by this method we can save the time of rebuilding the master database.I don't know if this works.Can anyone please tell me if this works and also disadvantages if any with this method?
thanks
Mohan
Various books read suggest that the Master
database be backed up when it is changed.'
What activities does a DBA perform (or perhaps)
a user) will cause the Master database to
change?
I am aware that information about the addition
of new databases is kept in the Master.
TIA Gary
I tried to import a stored procedure from one Master database to another Master database, but it won't allow me. I then tried to copy and paste that system stored procedure on isql, but it still won't allow me.
Why I can do a DTS on other databases, except on Master database?
Is there any way around it?
Thanks for any help.