All-Flash Arrays for Improving Database Performance to
... the storage system can be reduced by keeping and buffering an index in server memory that uniquely identifies data stored on the storage system. Nevertheless, the saving and accessing of data on the storage system is still needed because of the limited resources of servers and their inability to sto ...
... the storage system can be reduced by keeping and buffering an index in server memory that uniquely identifies data stored on the storage system. Nevertheless, the saving and accessing of data on the storage system is still needed because of the limited resources of servers and their inability to sto ...
OO Databases & XML
... A set of variables that contain the data for the object. The value of each variable is itself an object. A set of messages to which the object responds; each message may have zero, one, or more parameters. A set of methods, each of which is a body of code to implement a message; a method retur ...
... A set of variables that contain the data for the object. The value of each variable is itself an object. A set of messages to which the object responds; each message may have zero, one, or more parameters. A set of methods, each of which is a body of code to implement a message; a method retur ...
Chapter 11 – JavaScript/Jscript: Functions
... C How to Program C++ How to Program Java How to Program Java How to Program Visual Basic 6 How to Program Internet and World Wide Web How to Program Getting Started with Visual C++ 6 with an Introduction to MFC C++ How to Program Instructor's Manual with Solutions Disk Java How to Program Instructor ...
... C How to Program C++ How to Program Java How to Program Java How to Program Visual Basic 6 How to Program Internet and World Wide Web How to Program Getting Started with Visual C++ 6 with an Introduction to MFC C++ How to Program Instructor's Manual with Solutions Disk Java How to Program Instructor ...
Backup & Recovery with RMAN - Indico
... • Do not require database downtime • Can be used to recover full database, single/multiple tablespace(s)/datafile(s) or a corrupted block • Database can be recovered to any point in time within assumed backup retention period LCG 3D Workshop, Bologna, June 2007 - 4 ...
... • Do not require database downtime • Can be used to recover full database, single/multiple tablespace(s)/datafile(s) or a corrupted block • Database can be recovered to any point in time within assumed backup retention period LCG 3D Workshop, Bologna, June 2007 - 4 ...
Backup & Recovery with RMAN
... • Do not require database downtime • Can be used to recover full database, single/multiple tablespace(s)/datafile(s) or a corrupted block • Database can be recovered to any point in time within assumed backup retention period LCG 3D Workshop, Bologna, June 2007 - 4 ...
... • Do not require database downtime • Can be used to recover full database, single/multiple tablespace(s)/datafile(s) or a corrupted block • Database can be recovered to any point in time within assumed backup retention period LCG 3D Workshop, Bologna, June 2007 - 4 ...
Performance evaluation of parallel transaction processing in shared
... For complex database queries, providing short response times acceptable for on-line execution is the main performance challenge, in particular if such queries are executed on the same database than concurrent OLTP transactions. Since complex queries typically access large amounts of data or/and perf ...
... For complex database queries, providing short response times acceptable for on-line execution is the main performance challenge, in particular if such queries are executed on the same database than concurrent OLTP transactions. Since complex queries typically access large amounts of data or/and perf ...
Access 2002 Prepared by Angela Dejak November 2005 Access
... a field that contains unique information for each record, such as a student number for students or an ID number for staff. A group of related fields, such as all the information on a particular customer is called a record. A collection of related records is called a table. Access is a relational dat ...
... a field that contains unique information for each record, such as a student number for students or an ID number for staff. A group of related fields, such as all the information on a particular customer is called a record. A collection of related records is called a table. Access is a relational dat ...
Week 11: XML Access Control
... Database Security & Auditing: Protecting Data Integrity & Accessibility ...
... Database Security & Auditing: Protecting Data Integrity & Accessibility ...
Database
... Sharing of data and multi-user transaction processing: Allowing a set of concurrent users to retrieve from and to update the database. Concurrency control within the DBMS guarantees that each transaction is correctly executed or aborted ...
... Sharing of data and multi-user transaction processing: Allowing a set of concurrent users to retrieve from and to update the database. Concurrency control within the DBMS guarantees that each transaction is correctly executed or aborted ...
Chapter 5
... (storage info is in a bitmap stored with tablespace) – There is a bitmap for each datafile in the tablespace – Bitmap: small record in datafile header with one bit for each data block number that marks the beginning of a used group of consecutive blocks in datafile – Redo/undo log records created on ...
... (storage info is in a bitmap stored with tablespace) – There is a bitmap for each datafile in the tablespace – Bitmap: small record in datafile header with one bit for each data block number that marks the beginning of a used group of consecutive blocks in datafile – Redo/undo log records created on ...
2007_106_soorma_ppt - Oracle DBA – Tips and Techniques
... • Scalability – Add or remove nodes when needed • Pay as you grow – harness the power of multiple low-cost computers • Enable Grid Computing • DBA’s have their own vested interests! ...
... • Scalability – Add or remove nodes when needed • Pay as you grow – harness the power of multiple low-cost computers • Enable Grid Computing • DBA’s have their own vested interests! ...
PPT
... will see an inconsistent database (the sum A + B will be less than it should be). T1 T2 1. read(A) ...
... will see an inconsistent database (the sum A + B will be less than it should be). T1 T2 1. read(A) ...
Setup Flashback Database on Data Guard Physical Standby
... You plan to use Flashback Database or a guaranteed restore point as alternatives to point-intime recovery. If you plan to enable flashback logging, then note that the volume of Flashback Log generation is approximately the same order of magnitude as redo log generation. For example, if you intend to ...
... You plan to use Flashback Database or a guaranteed restore point as alternatives to point-intime recovery. If you plan to enable flashback logging, then note that the volume of Flashback Log generation is approximately the same order of magnitude as redo log generation. For example, if you intend to ...
Chapter 17: Parallel Databases
... Let v be the partitioning attribute value of a tuple. Tuples such that vi v < vi+1 go to disk i + 1. Tuples with v < v0 go to disk 0 and tuples with v vn-2 go to disk n-1. E.g., with a partitioning vector [5,11], a tuple with partitioning attribute value of 2 will go to disk 0, a tuple with valu ...
... Let v be the partitioning attribute value of a tuple. Tuples such that vi v < vi+1 go to disk i + 1. Tuples with v < v0 go to disk 0 and tuples with v vn-2 go to disk n-1. E.g., with a partitioning vector [5,11], a tuple with partitioning attribute value of 2 will go to disk 0, a tuple with valu ...
Chapter 17: Parallel Databases
... Let v be the partitioning attribute value of a tuple. Tuples such that vi v < vi+1 go to disk i + 1. Tuples with v < v0 go to disk 0 and tuples with v vn-2 go to disk n-1. E.g., with a partitioning vector [5,11], a tuple with partitioning attribute value of 2 will go to disk 0, a tuple with valu ...
... Let v be the partitioning attribute value of a tuple. Tuples such that vi v < vi+1 go to disk i + 1. Tuples with v < v0 go to disk 0 and tuples with v vn-2 go to disk n-1. E.g., with a partitioning vector [5,11], a tuple with partitioning attribute value of 2 will go to disk 0, a tuple with valu ...
Database design theory, Part I
... Even once we have a set of attributes that uniquely identifies our tuple, the question remains whether that key is the only one possible for the relation. Suppose we had a more traditional student relation, which contained student UTorID, name, email address, and major. The attribute pair {UTorID, ...
... Even once we have a set of attributes that uniquely identifies our tuple, the question remains whether that key is the only one possible for the relation. Suppose we had a more traditional student relation, which contained student UTorID, name, email address, and major. The attribute pair {UTorID, ...
ENTITY RELATIONSHIP DIAGRAM
... the information to be contained in the database through the process of constructing the ERD The ERD serves as documentation tool Finally, the ERD is used to communicate the logical structure of the database to users. In particular, the ERD effectively communicates the logic of the database to us ...
... the information to be contained in the database through the process of constructing the ERD The ERD serves as documentation tool Finally, the ERD is used to communicate the logical structure of the database to users. In particular, the ERD effectively communicates the logic of the database to us ...
item_name, color, size
... Space and time requirements for doing so can be very high n 2 combinations of group by It suffices to precompute some aggregates, and compute others on demand from one of the precomputed aggregates Can compute aggregate on (item_name, color) from an aggregate on (item_name, color, size) – Fo ...
... Space and time requirements for doing so can be very high n 2 combinations of group by It suffices to precompute some aggregates, and compute others on demand from one of the precomputed aggregates Can compute aggregate on (item_name, color) from an aggregate on (item_name, color, size) – Fo ...
Tracking Information across Application
... database names to the actual content of the database it refers to, and δ is a mapping that maps operators to their corresponding semantics. Σ maps constants and databases to their respective types. We assume that Ω is consistent with the typing for databases given in Σ: for each database Ω(db) is as ...
... database names to the actual content of the database it refers to, and δ is a mapping that maps operators to their corresponding semantics. Σ maps constants and databases to their respective types. We assume that Ω is consistent with the typing for databases given in Σ: for each database Ω(db) is as ...
Tutorial 1: Creating a Data Access Layer
... When working with data one option is to embed the data-specific logic directly into the presentation layer (in a web application, the ASP.NET pages make up the presentation layer). This may take the form of writing ADO.NET code in the ASP.NET page's code portion or using the SqlDataSource control fr ...
... When working with data one option is to embed the data-specific logic directly into the presentation layer (in a web application, the ASP.NET pages make up the presentation layer). This may take the form of writing ADO.NET code in the ASP.NET page's code portion or using the SqlDataSource control fr ...
Document
... ■ Sequential-access files are inappropriate for large instant-access applications. ■ Instant access is made possible by databases. – Individual database records can be accessed directly without sequentially searching. – Databases have been used in business applications for decades. ...
... ■ Sequential-access files are inappropriate for large instant-access applications. ■ Instant access is made possible by databases. – Individual database records can be accessed directly without sequentially searching. – Databases have been used in business applications for decades. ...
Enhanced Oracle Database Monitor Plugin
... is described in next section. Configuration details for each of the above dashlets are depicted in the following sections. ...
... is described in next section. Configuration details for each of the above dashlets are depicted in the following sections. ...
Designing Performance-Optimized JDBC Applications
... Using the Statement Object Instead of the PreparedStatement Object JDBC drivers are optimized based on the perceived use of the functions that are being executed. Choose between the PreparedStatement object and the Statement object depending on how you plan to use the object. The Statement object is ...
... Using the Statement Object Instead of the PreparedStatement Object JDBC drivers are optimized based on the perceived use of the functions that are being executed. Choose between the PreparedStatement object and the Statement object depending on how you plan to use the object. The Statement object is ...