implementing database backups and restorations

... Oracle database: Trang 19frame-132 5.1 Reviewing where and how database users and passwords are maintainedSELECT SQLs automatically For Torque to connect to the database, youneed to have a database ... accessfrom the application) should be handled by the application layer From a Trang 15128 5.1 Reviewing where and how database users and passwords are maintaineddatabase-centric view, this means the ... Whenever a connec-tion to the database is made, the database gets a username and a passwordand proceeds to authenticate these credentials Once authenticated, thedatabase looks up the set of privileges

Ngày tải lên: 08/08/2014, 18:22

... on my C:\ drive and typed in backupand sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... if you don’t have good log notes and good labeling, you should stick with full backups WARNING: Do not mix Differential and Incremental backups between Full backups An Incremental backup resets ... a file Run the attribcommand before and after You can even experiment with the attribcommand to foil the backup process Below are best practices for backups: • Full backups (all files) when possible

Ngày tải lên: 10/12/2013, 14:16

... Grid Databases 10 Transactions in Distributed and Grid Databases 291 10.1 Grid Database Challenges 292 10.2 Distributed Database Systems and Multidatabase Systems 293 10.2.1 Distributed Database ... 2High-Performance Parallel Database Processingand Grid Databases RMIT University, Australia A John Wiley & Sons, Inc., Publication Trang 4Parallel Database Processingand Grid Databases Trang 6High-Performance ... These include data warehousing and online analyticprocessing (OLAP) applications, data mining, genome databases, and multiplemedia databases manipulating unstructured and semistructured data Therefore,

Ngày tải lên: 21/01/2014, 18:20

... 1979) and by Hawthorn (VLDB 1980) A more complete vey on database machine was given by Song (IEEE Database Engineering Bulletin sur-1981) The work on the database machine was compiled and published ... strengths and weaknesses of the following parallel database architectures: ž Shared-everything ž Shared-nothing ž Shared-something 1.9 Describe the relationship between parallel databases and Grid databases. ... database processing can be found in Hameurlain and Morvan (DEXA 1995), Graefe and Cole (ACM TODS 1995), Shatdal and Naughton (SIGMOD 1995), and Ganguly, Goel, and Silberschatz (PODS 1996) Different authors

Ngày tải lên: 21/01/2014, 18:20

... basis for implementing sorting operations in several databasemachine prototypes (e.g., Gamma) and some commercial Parallel DBMS Parallel merge-all sort is composed of two phases: local sort and final ... group-by attribute and performs the aggregatefunction Using Query 4.5 as an example, one node may produce, for example,(Math, 300) and (Science, 500) and another node (Business, 100) and (Science,100) ... intermediate merging in the aboveexample are sorted within and among processors This means that, for example,processors 1 and 2 produce a sorted list each, and the union of these results is alsosorted where

Ngày tải lên: 21/01/2014, 18:20

... Number of processors R and S Size of table R and table S jRj and jSj Number of records in table R and table S jRi j and jSi j Number of records in table R and table S on node i P ... one aggregate function and a single join High-Performance Parallel Database Processing and Grid Databases, by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel Copyright ... join) and Hua et al. (VLDB 1991; IEEE TKDE 1995; proposing partition tuning to handle dynamic load balancing). Other work on skew handling and load balancing include DeWitt et al. (VLDB 1992) and

Ngày tải lên: 21/01/2014, 18:20

... the node with underflow)and redistribute the entries among the node and its sibling so that both are at leasthalf full; otherwise, the node is merged with its siblings and the number of leafnodes ... (18) is located in processor 1 and node (23, 37) is in processors 1 and 2, the new merged node Trang 6Processors 1, 2 o (18, 23, 37) should be located in processors 1 and 2 Also, as a consequence ... when performing an insertion or deletion operation and to restruc-turing and reallocating nodes after a split/merge has been done The insertion anddeletion of a key from an index tree are preceded

Ngày tải lên: 21/01/2014, 18:20

... and 33, and 3 processors), load balancing is achieved by spreading andcombining partitions to create more equal loads For example, buckets 11, 22and 23 are placed at processor 1, buckets 13 and ... technique, Ž Divide and broadcast technique, Ž One-way divide and partial broadcast technique, and Ž Two-way divide and partial broadcast technique. b Adopting the two-way divide and partial broadcast ... smallest) Figure 8.13 Divide and partial broadcast example B and partial broadcast A) This is then called a “two-way” divide and partial broadcast Figure 8.14(a and b) shows the results of reverse

Ngày tải lên: 21/01/2014, 18:20

... queries, whereas Hong prob-and Stonebraker (SIGMOD 1992 and DAPD 1993) proposed optimization based on interoperation and intraoperation for XPRS parallel database Hameurlain and Morvan (ICPP 1993, ... atwo-level (one local and another global) system This section gives an overview of distributed and multidatabase systems, andevaluates their suitability for the Grids 10.2.1 Distributed Database Systems ... fromall the participating sites Trang 1610.2 Distributed Database Systems and Multidatabase Systems 295LDB–Local Database LDBMS–Local Database Management Systems –Distributed DBMS boundary T1,

Ngày tải lên: 21/01/2014, 18:20

... replication in the Grid is more common than in any other database systems (e.g., parallel databases, distributed databases, and multidatabase systems). 13.2 Discuss why replication may be a problem ... in the Grid database: per-(1) The Grid database handles comparatively larger volumes of data than tradi-tional distributed databases The nature of the transactions is long-running,and hence aborts ... database) is more complicatedthan in traditional transaction systems Traditional transaction systems (includingcentral and distributed databases) execute a database transaction in a single (andcentral)

Ngày tải lên: 21/01/2014, 18:20

... center of your database security and auditing initiative Resources and Further Reading Summary C2 Security and C2 Auditing Database Security within the General Security Landscape and a Defense-in-Depth ... include all aspects of database security and auditing, including network security for databases, authentication and authorization issues, links and replication, database Trojans, and more You will ... Many database vulnerabilities and security issues are caused by misconfigurations and inappropriate usage of the database by application servxv xvi Preface ers and other clients (or even other databases...

Ngày tải lên: 01/06/2014, 09:49

... X Lock/unlock bytes and execute next command write & execute Write to file and execute next command logoff & execute Log off and execute next command write & unlock Write to and unlock a byte range ... commands and highlights the commands used for implementing named pipes As you can see, named pipes communication is not the main focus of SMB, and SMB is used to piggyback (or tunnel) a database ... existing RPC infrastructure @Spy 3.B Named Pipes and SMB/CIFS Table 3.A 91 SMB Commands Command Description Command Description bad command] Invalid SMB command named pipe call Open, write, read, or...

Ngày tải lên: 08/08/2014, 18:22

... SqlDataAdapter command = new SqlDataAdapter("authenticateUser", connection); command.SelectCommand.CommandType = CommandType.StoredProcedure; SqlParameter parm = command.SelectCommand.Parameters.Add("@login", ... audits and tests targeted for Oracle Applications 5.7 Work toward alignment between the application user model and the database user model The database has a comprehensive security model, and you ... permissions associated with a database login, and a lengthy discussion of topics associated with database logins, authentication, and authorization is provided in Chapter and various other sections...

Ngày tải lên: 08/08/2014, 18:22

... clout, and the result is widespread industry acceptance Chapter Securing database- to -database communications Databases are often not islands that are completely disconnected from other databases ... for developers and better data repositories for business users This chapter focuses on such database- to -database relationships and how they affect the need to secure and monitor databases As you’ll ... server make “traditional” calls to the database and have security built into both the application layer and the database The first set of issues involves known (and unknown) Apache server vulnerabilities...

Ngày tải lên: 08/08/2014, 18:22

... simplest form of replication and involves extracting data from the master database (master in this context is the “main” database and not SQL Server's master database) and then readChapter 248 8.5 ... for Sybase and Microsoft SQL Server, and SQL/PL for DB2 The condition will be that the command is in the group of procedural commands (as shown in Figure 9.1), and the procedural command group ... the trace DatabaseID ID of the database specified by the USE database statement, or the default database if no USE database statement is issued for a given connection The value for a database can...

Ngày tải lên: 08/08/2014, 18:22

... including database sessions The really neat thing is that the database is oblivious to this action, and it is completely transparent to both the database client and the database server From a database ... your database conversations and eavesdrop on database access—capturing and stealing both the statements that you issue as well as the data returned by the database server Eavesdropping on your database ... the database server as a networked service You learned that most database environments use TCP/IP and that the database server listens to certain ports and accepts connections initiated by database...

Ngày tải lên: 08/08/2014, 18:22

... standpoint, and from a configuration management and process standpoint From a security standpoint, DDL commands are potentially the most damaging commands that exist and can certainly be used by an attacker ... and triggers In Chapter you learned about database Trojans and the importance of monitoring code changes made to triggers and stored procedures Because these database constructs use flexible and ... of the databases In addition, numerous third-party solutions focus on auditing and create an audit trail based on database activities These systems are external to the database and audit database...

Ngày tải lên: 08/08/2014, 18:22