Tag Archives: keys
MDF corruption and its recovery
Microsoft SQL Server is a relational database which stores and retrieves data as per the need of other software applications. This software allows the access of various application programs either running on the same computer or on another across the same network. It is relational webhosting database which stores website information like blog posts or user information. It is one of the most popular databases on Windows servers and is highly suitable for several business purposes.
MS SQL stores all the data and information in MDF file format which holds the relevant data of user information and website details. These files contain all important data of any organization and perform various critical operations. It becomes very disgusting if these MDF files get corrupted or damaged somehow. As every software has the tendency to get corrupted or damaged, these MDF files never let any assurance not to corrupt. In the case of SQL corruption, the users need not to be worried as there are such tools available which can perform MS SQL recovery very efficiently.
There are various predictable and unpredictable causes that affect the MS SQL database and make the MDF files corrupted resulting in a situation of data loss. The reasons that cause SQL damage are summarized below:
1.Corrupted/deleted LDF log file
2.I/O errors
3.Corruption in the MDF file of SQL database Server
4.SQL Database in “suspected” mode
5.Deletion of items (like tables, system objects, records etc)
6.Virus attack or power failure
7.Bad sector in storage media
8.Maximization of the storage space of SQL database
When there is a corruption in the MDF files, users face numerous errors while opening the database. Some common error messages are easily encountered when a corrupted/ damaged MS SQL file is opened. Some errors can appear prompting on your screen. Some of these are:
1.Server can’t find the requested database table
2.The process could not execute ‘sp_replcmds’ on server
3.The file *.mdf is missing and needs to restore
4.Internal error. buffer provided to read column value is too small
5.Table Corrupt
6.File: , line=466 Failed Assertion = ‘0’
7.Table error: Object ID 0, index ID 0, and page ID (1:105). The PageId in the page header = (0:0)
8.Conflict occurred in databasedb_name, table ‘table_name’, column ‘column_name’
Once your MS SQL database corrupts, you need to search an effective software utility that can recover the MDF files and retrieve data from the corrupt/ damaged database. The MS SQL recovery software should be capable of recovering all lost/ damaged tables, triggers, stored procedures, data structures like primary keys, indices, unique keys, foreign keys, predefined defaults and other user data types. Further, the repair tool must possess some powerful algorithms which maintain the data integrity and never change the original format of the data.
MDF corruption and its recovery
Microsoft SQL Server is a relational database which stores and retrieves data as per the need of other software applications. This software allows the access of various application programs either running on the same computer or on another across the same network. It is relational webhosting database which stores website information like blog posts or user information. It is one of the most popular databases on Windows servers and is highly suitable for several business purposes.
MS SQL stores all the data and information in MDF file format which holds the relevant data of user information and website details. These files contain all important data of any organization and perform various critical operations. It becomes very disgusting if these MDF files get corrupted or damaged somehow. As every software has the tendency to get corrupted or damaged, these MDF files never let any assurance not to corrupt. In the case of SQL corruption, the users need not to be worried as there are such tools available which can perform MS SQL recovery very efficiently.
There are various predictable and unpredictable causes that affect the MS SQL database and make the MDF files corrupted resulting in a situation of data loss. The reasons that cause SQL damage are summarized below:
1.Corrupted/deleted LDF log file
2.I/O errors
3.Corruption in the MDF file of SQL database Server
4.SQL Database in “suspected” mode
5.Deletion of items (like tables, system objects, records etc)
6.Virus attack or power failure
7.Bad sector in storage media
8.Maximization of the storage space of SQL database
When there is a corruption in the MDF files, users face numerous errors while opening the database. Some common error messages are easily encountered when a corrupted/ damaged MS SQL file is opened. Some errors can appear prompting on your screen. Some of these are:
1.Server can’t find the requested database table
2.The process could not execute ‘sp_replcmds’ on server
3.The file *.mdf is missing and needs to restore
4.Internal error. buffer provided to read column value is too small
5.Table Corrupt
6.File: , line=466 Failed Assertion = ‘0’
7.Table error: Object ID 0, index ID 0, and page ID (1:105). The PageId in the page header = (0:0)
8.Conflict occurred in databasedb_name, table ‘table_name’, column ‘column_name’
Once your MS SQL database corrupts, you need to search an effective software utility that can recover the MDF files and retrieve data from the corrupt/ damaged database. The MS SQL recovery software should be capable of recovering all lost/ damaged tables, triggers, stored procedures, data structures like primary keys, indices, unique keys, foreign keys, predefined defaults and other user data types. Further, the repair tool must possess some powerful algorithms which maintain the data integrity and never change the original format of the data.
Proper Data Security And Storage Methods (Page 1 of 2)
The PCI DSS (Payment Card Industry Data Security Standard) requires that any merchant who accepts, processes, stores, transmits sensitive credit card information must do everything possible to protect and guard that data. Proper data security and storage, however, can be a difficult thing to do in-house.
Data security and storage comprise a major portion of the PCI DSS and is also a necessary part of maintaining trust with your customers. In an age where personal information is a valuable commodity, customers need to know that their transactions are secure and you have a priority on guarding their personal data.
The third requirement of the PCI DSS states simply: “Protect stored cardholder data.” This may be a simple thing to say, but that doesn’t necessarily make it an easy thing to implement, nor does it downplay the importance. There are quite a few individual security controls that are required before you can say that you have created the proper data security and storage environment.
The first step is encryption. If you must store sensitive information on your own system you must encrypt it. This is a basic step because if a criminal intruder should happen to bypass all the other security measures that are in place, all they will find on your system are strings of random gibberish that are useless without the encryption key.
The next step is to limit the amount of cardholder data on your system. This includes only keeping the data that is absolutely necessary for legal, business, or regulatory purposes. When you don’t need it anymore, get rid of it. The less you have that is worth stealing, the less of a target you become. There are also a few things you’re not allowed to store at all. These include the full contents of any track from the magnetic stripe (like the card verification code or PIN verification value), or the three or four digit validation codes or personal identification numbers.
Of course, even if you’ve taken the steps to electronically protect data by encrypting it, there’s still the possibility that someone inside the company could steal or wrongfully employ the encryption keys. For that reason, the third requirement of the PCI DSS also mandates protecting those keys against misuse and disclosure.
Access to these keys must be restricted to the fewest number of people possible. These keys must also be stored in as few places as possible. Backups are, of course, necessary, but if you end up backing it up in too many places, you’re likely to forget where they all are, or accidentally place one where someone with criminal intentions can get a hold of it.
Requirement numbers seven, eight, and nine also deal with limiting physical access to cardholder data. These mandate that you restrict access to this data by to business need-to-know, and that you assign unique IDs to each person with computer access. These are measures that help ensure that you can trace the source of your problem, should a breach occur.