
INTRODUCTION TO DATABASE (cont.)
... Summary (continued) • Development of data administration function is based on evolution from departmental data processing to more centralized electronic data processing (EDP) department to more formal “data as a corporate asset” information ...
... Summary (continued) • Development of data administration function is based on evolution from departmental data processing to more centralized electronic data processing (EDP) department to more formal “data as a corporate asset” information ...
A Distributed Query Execution Method for RDF Storage Managers
... the main subject of distribution, as suggested in [18]. Groups of classes that are usually accessed together can be assigned to columns where similar class instances are stored. The benefits of splitting a triple store into separate data stores (tables) have been shown in [24]. Basically, queries ca ...
... the main subject of distribution, as suggested in [18]. Groups of classes that are usually accessed together can be assigned to columns where similar class instances are stored. The benefits of splitting a triple store into separate data stores (tables) have been shown in [24]. Basically, queries ca ...
VPM Technical
... AOS understands volumes and file system • File, smart-sector, sector-mode AOS creates correct geometry, applies to new disk(s) • Volume, partition, filesystem information Personalization “customizes” image for new environment • Each OS instructed to scan and reconfigure devices (implementation is OS ...
... AOS understands volumes and file system • File, smart-sector, sector-mode AOS creates correct geometry, applies to new disk(s) • Volume, partition, filesystem information Personalization “customizes” image for new environment • Each OS instructed to scan and reconfigure devices (implementation is OS ...
Temporal Databases
... • Temporal data: encoded representation of timestamped facts. – Each tuple must include at least one timestamp. – Problem:What about queries that produce results that are not temporal? i.e. result of query is outside the domain of (temporal) database. – eg. Get names of all people who have supplied ...
... • Temporal data: encoded representation of timestamped facts. – Each tuple must include at least one timestamp. – Problem:What about queries that produce results that are not temporal? i.e. result of query is outside the domain of (temporal) database. – eg. Get names of all people who have supplied ...
The Hobgoblin of Little Minds
... In the serializable isolation level, transactions must execute in such a way that they appear to be executed one at a time (“serially”), rather than concurrently. […] In other words, concurrent transactions executing in serializable mode are only permitted to make database changes they could have ma ...
... In the serializable isolation level, transactions must execute in such a way that they appear to be executed one at a time (“serially”), rather than concurrently. […] In other words, concurrent transactions executing in serializable mode are only permitted to make database changes they could have ma ...
Document
... Both operations must be idempotent That is, even if the operation is executed multiple times the effect is the same as if it is executed once Needed since operations may get re-executed during recovery When recovering after failure: Transaction Ti needs to be undone if the log contains the r ...
... Both operations must be idempotent That is, even if the operation is executed multiple times the effect is the same as if it is executed once Needed since operations may get re-executed during recovery When recovering after failure: Transaction Ti needs to be undone if the log contains the r ...
Microsoft Access 2010
... • Type the desired name for the steps in the Save as text box • If necessary, type a description for the export steps • Tap or click the Save Export button (Export - Excel Spreadsheet dialog box) to save the export steps Querying a Database ...
... • Type the desired name for the steps in the Save as text box • If necessary, type a description for the export steps • Tap or click the Save Export button (Export - Excel Spreadsheet dialog box) to save the export steps Querying a Database ...
Hibernate
... Object-Relational Persistence • Majority of Applications require persistent data, typically in a DBMS • Relational DBMS are designed to be understandable in a human way • Java Applications are written with an object-oriented approach • Relational tables in rows and columns vs objects with attribute ...
... Object-Relational Persistence • Majority of Applications require persistent data, typically in a DBMS • Relational DBMS are designed to be understandable in a human way • Java Applications are written with an object-oriented approach • Relational tables in rows and columns vs objects with attribute ...
db_ch4
... Case Statement for Conditional Updates Same query as before: Increase all accounts with balances over ...
... Case Statement for Conditional Updates Same query as before: Increase all accounts with balances over ...
Data Integrity
... A transaction is a unit of program execution that accesses and possibly updates various data items. A transaction must see a consistent database. During transaction execution the database may be inconsistent. A transaction ends with a Commit or an Abort When the transaction is committed, the databas ...
... A transaction is a unit of program execution that accesses and possibly updates various data items. A transaction must see a consistent database. During transaction execution the database may be inconsistent. A transaction ends with a Commit or an Abort When the transaction is committed, the databas ...
No Slide Title
... • The join operator horizontally combines (concatenates) data from one row of a table with rows from another or the same table when certain criteria are met. • The criteria involves a relationship among the columns in the join relational table. • If the join criterion is based on equality of column ...
... • The join operator horizontally combines (concatenates) data from one row of a table with rows from another or the same table when certain criteria are met. • The criteria involves a relationship among the columns in the join relational table. • If the join criterion is based on equality of column ...
DBFarm: A Scalable Cluster for Multiple Databases
... For simplicity in the explanations, and without loss of generality, we describe the details of the DBFarm transaction scheduling with a single master database server. As clients communicate only with masters, they are not aware of any satellites. Therefore, incoming read-only transactions need to be ...
... For simplicity in the explanations, and without loss of generality, we describe the details of the DBFarm transaction scheduling with a single master database server. As clients communicate only with masters, they are not aware of any satellites. Therefore, incoming read-only transactions need to be ...
What Is a Transaction?
... An Example Of A Page-Level Lock •T1 and T2 cannot access the same page concurrently, even if they use different rows. • the most frequently used multiuser DBMS locking methods. ...
... An Example Of A Page-Level Lock •T1 and T2 cannot access the same page concurrently, even if they use different rows. • the most frequently used multiuser DBMS locking methods. ...
Microsoft Lync Server 2010 Backup and Restore Guide Microsoft
... Backup and Restoration Requirements: Data Microsoft Lync Server 2010 uses settings and configuration information that is stored in databases, and data that is stored in databases and file stores. This section describes the data that you need to back up to be able to restore service if your organizat ...
... Backup and Restoration Requirements: Data Microsoft Lync Server 2010 uses settings and configuration information that is stored in databases, and data that is stored in databases and file stores. This section describes the data that you need to back up to be able to restore service if your organizat ...
Chapter 7: Database Applications and Privacy
... One aspect of the USA Patriot Act is the requirement that: A. all citizens must submit to lie detector tests upon request. B. all US companies must turn over their employees private records. C. libraries must turn over their patron records. D. libraries must include books on computer privacy issues ...
... One aspect of the USA Patriot Act is the requirement that: A. all citizens must submit to lie detector tests upon request. B. all US companies must turn over their employees private records. C. libraries must turn over their patron records. D. libraries must include books on computer privacy issues ...
Slide 1
... • TotalHR SQL is a flexible product that provides a the ability for customization. • Customer’s requirements go further than the standard product. • Third Party Applications ...
... • TotalHR SQL is a flexible product that provides a the ability for customization. • Customer’s requirements go further than the standard product. • Third Party Applications ...
Towards a solution to the proper integration of a
... A relation is often conceived as a table and hence this representation enables a smoother interface with relational database ...
... A relation is often conceived as a table and hence this representation enables a smoother interface with relational database ...
27 - AIMMS
... the part of AIMMS B.V. The software described in this document is furnished under a license agreement and may only be used and copied in accordance with the terms of the agreement. The documentation may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any elect ...
... the part of AIMMS B.V. The software described in this document is furnished under a license agreement and may only be used and copied in accordance with the terms of the agreement. The documentation may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any elect ...
addfile-2013-06-24-01-38
... Now i am using the $this->db->query() $query = "SELECT * FROM tb_cash_transaction, tb_currency, tb_user where tb_cash_transaction.CURRENCY_ID=tb_currency.CURRENCY_ID and tb_cash_transaction.USER_ID=tb_user.USER_ID and TYPE='cash_out'"; $query = $this->db->query($query); ...
... Now i am using the $this->db->query() $query = "SELECT * FROM tb_cash_transaction, tb_currency, tb_user where tb_cash_transaction.CURRENCY_ID=tb_currency.CURRENCY_ID and tb_cash_transaction.USER_ID=tb_user.USER_ID and TYPE='cash_out'"; $query = $this->db->query($query); ...
TinyDB Documentation
... 1. The constructor will receive all arguments passed to TinyDB when creating the database instance (except storage which TinyDB itself consumes). In other words calling TinyDB('something', storage=YAMLStorage) will pass 'something' as an argument to YAMLStorage. 2. We use yaml.safe_load as recommend ...
... 1. The constructor will receive all arguments passed to TinyDB when creating the database instance (except storage which TinyDB itself consumes). In other words calling TinyDB('something', storage=YAMLStorage) will pass 'something' as an argument to YAMLStorage. 2. We use yaml.safe_load as recommend ...