Integrating reliable memory in databases
... than a file system can, because databases know more about their access patterns. Our second software design (Sect. 5.2) addresses this problem by mapping the Rio file cache into the database address space. This exposes reliable memory to database crashes, and we quantify the increased risk posed by ...
... than a file system can, because databases know more about their access patterns. Our second software design (Sect. 5.2) addresses this problem by mapping the Rio file cache into the database address space. This exposes reliable memory to database crashes, and we quantify the increased risk posed by ...
notes #5
... Relational Model Terminology • A relation is a table with columns and rows. – Only applies to logical structure of the database, not the physical structure. – A relation corresponds to an entity set, or collection of entities. An entity is a person, place, event, or thing about which data is collec ...
... Relational Model Terminology • A relation is a table with columns and rows. – Only applies to logical structure of the database, not the physical structure. – A relation corresponds to an entity set, or collection of entities. An entity is a person, place, event, or thing about which data is collec ...
High-Performance Data Access with FedSQL and DS2
... PROC FEDSQL VS PROC SQL - PERFORMANCE This section attempts to convey two main themes. First we endeavor to illustrate the type of situation a user might encounter while performing their day to day tasks. For example, consider a case where the user is writing a query to join two tables. Here it woul ...
... PROC FEDSQL VS PROC SQL - PERFORMANCE This section attempts to convey two main themes. First we endeavor to illustrate the type of situation a user might encounter while performing their day to day tasks. For example, consider a case where the user is writing a query to join two tables. Here it woul ...
- Sacramento - California State University
... as DBAs have to set polices and manually perform the audit. Therefore, suspicious activities may not be discovered until much later time. Audit data are stored in the extensive built-in system logs, and they can only be queried through the predefined log views. In a similar way to encrypted data, w ...
... as DBAs have to set polices and manually perform the audit. Therefore, suspicious activities may not be discovered until much later time. Audit data are stored in the extensive built-in system logs, and they can only be queried through the predefined log views. In a similar way to encrypted data, w ...
Full PDF - International Journal of Research in Computer
... databases, multivalued databases, flat files, csv files, xml files, excel files etc. Typically, data warehouses are allowed to extract and store the structured data. A research carried out by IBM mentioned that 80% of the data in an enterprise is unstructured Data [1]. So extracting unstructured dat ...
... databases, multivalued databases, flat files, csv files, xml files, excel files etc. Typically, data warehouses are allowed to extract and store the structured data. A research carried out by IBM mentioned that 80% of the data in an enterprise is unstructured Data [1]. So extracting unstructured dat ...
Setting Up a Hot Standby Database
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
Transaction Management in Distributed Database Systems: the
... Distributed database systems (DDBS) pose different problems when accessing distributed and replicated databases. Particularly, access control and transaction management in DDBS require different mechanism to monitor data retrieval and update to databases. Current trends in multi-tier client/server n ...
... Distributed database systems (DDBS) pose different problems when accessing distributed and replicated databases. Particularly, access control and transaction management in DDBS require different mechanism to monitor data retrieval and update to databases. Current trends in multi-tier client/server n ...
LABELVIEW 2015 Tutorial
... In this chapter we are going to link a label (the container) with a database (the content). To do this, we will use ODBC (Open DataBase Connectivity) or OLE DB connections. Databases allow you to store data. All data is organized into two-dimensional tables in what is called a relationship. Each row ...
... In this chapter we are going to link a label (the container) with a database (the content). To do this, we will use ODBC (Open DataBase Connectivity) or OLE DB connections. Databases allow you to store data. All data is organized into two-dimensional tables in what is called a relationship. Each row ...
This resume has been forwarded to you at the request of Monster
... Optimized by tweaking certain important parameters in the postgresql.conf file such as sort_mem, random_page_cost, shared buffers etc. · Worked with daily backup and restore monitor and maintenance for Unix and Windows instance of PostgreSQL · Worked with Performed database migration from MS SQL s ...
... Optimized by tweaking certain important parameters in the postgresql.conf file such as sort_mem, random_page_cost, shared buffers etc. · Worked with daily backup and restore monitor and maintenance for Unix and Windows instance of PostgreSQL · Worked with Performed database migration from MS SQL s ...
Guided Test Generation for Database Applications via Synthesized
... process terminates when all the feasible program paths have been explored or the number of explored paths has reached the predefined upper bound. Recently, some approaches [12, 16] adapt this technique to generate tests, including both program inputs and database states, for achieving high structura ...
... process terminates when all the feasible program paths have been explored or the number of explored paths has reached the predefined upper bound. Recently, some approaches [12, 16] adapt this technique to generate tests, including both program inputs and database states, for achieving high structura ...
Natix - Al Akhawayn University
... Store data as a plain text file Unnormalized relations But: Data as centric view: Large number Storedata objects Need to parse the entire file for of tables But: processing every query Designing Nativecentric XML database Document all OOD systems are view: not enough systemsinforma ...
... Store data as a plain text file Unnormalized relations But: Data as centric view: Large number Storedata objects Need to parse the entire file for of tables But: processing every query Designing Nativecentric XML database Document all OOD systems are view: not enough systemsinforma ...
Solutions
... Recovering Temporary Tablespaces • As tempfiles aren't checkpointed, we don't need to back them up. We can recreate them at any point after the database has been restored, recovered and opened • Temporary datafiles that belong to locally managed temporary tablespaces are automatically re-created du ...
... Recovering Temporary Tablespaces • As tempfiles aren't checkpointed, we don't need to back them up. We can recreate them at any point after the database has been restored, recovered and opened • Temporary datafiles that belong to locally managed temporary tablespaces are automatically re-created du ...
Federated Databases
... Given today’s heterogeneous environments and the need to share information between many different entities, a new area of database technology is being developed. Database Federation is concerned with the integration of two or more database systems to form a single view for an application or user. Gi ...
... Given today’s heterogeneous environments and the need to share information between many different entities, a new area of database technology is being developed. Database Federation is concerned with the integration of two or more database systems to form a single view for an application or user. Gi ...
Standby Database
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
Consolidate Databases using SQL Server Storyboard Sample
... Organizations are wasting significant resources by running under-utilized servers Historically, hosting one SQL Server instance per server was the safest approach. Today, it only leads to an unnecessary number of servers. • Past problems isolating SQL Server database instances made hosting multiple ...
... Organizations are wasting significant resources by running under-utilized servers Historically, hosting one SQL Server instance per server was the safest approach. Today, it only leads to an unnecessary number of servers. • Past problems isolating SQL Server database instances made hosting multiple ...
Roll - Victoria University of Wellington
... • Each roll-up operation can be expressed using a SQL/92 SELECT…AGG()… GROUP BY… statement • Drill – down is just an opposite operation of roll – up, but it requires the access to data of finer granularity ...
... • Each roll-up operation can be expressed using a SQL/92 SELECT…AGG()… GROUP BY… statement • Drill – down is just an opposite operation of roll – up, but it requires the access to data of finer granularity ...
LECTURE 4 DATABASE PROGRAMMING SQL FUNCTION ON PL
... changes to the database since the last COMMIT or ROLLBACK command. Frequent commits in the case of transaction involving large amount of data is recommended. But too many commits can affect performance. In many implementations, an implicit commit of all the changes is done, if user logs off from the ...
... changes to the database since the last COMMIT or ROLLBACK command. Frequent commits in the case of transaction involving large amount of data is recommended. But too many commits can affect performance. In many implementations, an implicit commit of all the changes is done, if user logs off from the ...
ppt slides - users.monash.edu.au
... Example: 10000 student records, and the partitioning attribute is StudentID (PK) that ranges from 1 to 10000. Assume the average query retrieves a range of 500 records (RecordsPerQ=500). Queries access students per year enrolment wth average results of 500 records. Assume the optimal performance is ...
... Example: 10000 student records, and the partitioning attribute is StudentID (PK) that ranges from 1 to 10000. Assume the average query retrieves a range of 500 records (RecordsPerQ=500). Queries access students per year enrolment wth average results of 500 records. Assume the optimal performance is ...
Resume - State Public Services Tribunal
... representatives of those countries associated to this region in order to validate the different aspects of the financial state of each entity however there are two main topics included in all these reviews: the actual figures associated to each financial indicator (quantitative data) and the detail ...
... representatives of those countries associated to this region in order to validate the different aspects of the financial state of each entity however there are two main topics included in all these reviews: the actual figures associated to each financial indicator (quantitative data) and the detail ...
An Introduction to Distributed Object Management
... provided by the distributed DBMS in order to achieve full data independence in a distributed environment: network (or distribution ) transparency which hides the existence of the network and the distribution of data, replication transparency which masks the existence of physical copies of logical da ...
... provided by the distributed DBMS in order to achieve full data independence in a distributed environment: network (or distribution ) transparency which hides the existence of the network and the distribution of data, replication transparency which masks the existence of physical copies of logical da ...
(A) R
... A canonical cover for F is a set of dependencies Fc such that F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and No functional dependency in Fc contains an extraneous attribute, and Each left side of functional dependency in Fc is unique. ...
... A canonical cover for F is a set of dependencies Fc such that F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and No functional dependency in Fc contains an extraneous attribute, and Each left side of functional dependency in Fc is unique. ...
PPT_ch08-is333 - Ms. Raghad Altikriti
... products 13-Q2/p2 and 23109-HB. All products purchases are stored in the LINE table. It is easy to find out who purchased any given product by searching the P_CODE attribute in the LINE table. But in this case, we want to know all customers who purchased both products. Not just one ...
... products 13-Q2/p2 and 23109-HB. All products purchases are stored in the LINE table. It is easy to find out who purchased any given product by searching the P_CODE attribute in the LINE table. But in this case, we want to know all customers who purchased both products. Not just one ...
Cause - Dynatrace Community
... 2. VAS processing of vdata files was taking about 3 minutes (sub 1 second is normal). 3. Method data from VA not available in VAS reports. ...
... 2. VAS processing of vdata files was taking about 3 minutes (sub 1 second is normal). 3. Method data from VA not available in VAS reports. ...
Databases in MS
... – One entity participates in the relationship from the ‘left’ and one entity participates in the relationship from the ‘right’. ...
... – One entity participates in the relationship from the ‘left’ and one entity participates in the relationship from the ‘right’. ...