Fundamentals of Database Development (with Delphi)
... immediately. Single−tiered databases are limited in how much data the tables can hold and the number of users your application can support. When the database information includes complicated relationships between several tables, or when the number of clients grows, you may want to use a two−tiered o ...
... immediately. Single−tiered databases are limited in how much data the tables can hold and the number of users your application can support. When the database information includes complicated relationships between several tables, or when the number of clients grows, you may want to use a two−tiered o ...
White Paper
... the area of performance monitoring and tuning. For this reason, we may need to unlearn some of our old tuning methodologies and understand and embrace the new. The main thrust in this flagship version of the database has been to automate the traditional database administrative functions, support ent ...
... the area of performance monitoring and tuning. For this reason, we may need to unlearn some of our old tuning methodologies and understand and embrace the new. The main thrust in this flagship version of the database has been to automate the traditional database administrative functions, support ent ...
Introduction to SQL
... some of their attributes null signifies an unknown value or that a value does not exist. The result of any arithmetic expression involving null is null ...
... some of their attributes null signifies an unknown value or that a value does not exist. The result of any arithmetic expression involving null is null ...
s - CSE, IIT Bombay
... If data is stored on a solid state (flash) disk instead of a hard disk, which of the following join methods will benefit the most: ...
... If data is stored on a solid state (flash) disk instead of a hard disk, which of the following join methods will benefit the most: ...
(A) R
... E.g. Set of accounts stored with each customer, and set of owners stored with each account We assume all relations are in first normal form (revisit this in Chapter 9 on Object Relational Databases) ...
... E.g. Set of accounts stored with each customer, and set of owners stored with each account We assume all relations are in first normal form (revisit this in Chapter 9 on Object Relational Databases) ...
Read Chapter 3.1
... depositor : stores information about which customer owns which account customer : stores information about customers Storing all information as a single relation such as bank(account-number, balance, customer-name, ..) results in repetition of information (e.g. two customers own an account) th ...
... depositor : stores information about which customer owns which account customer : stores information about customers Storing all information as a single relation such as bank(account-number, balance, customer-name, ..) results in repetition of information (e.g. two customers own an account) th ...
select
... – AND: (true and unknown) = unknown, (false and unknown) = false, (unknown and unknown) = unknown – NOT: (not unknown) = unknown – “P is unknown” evaluates to true if predicate P evaluates to unknown ...
... – AND: (true and unknown) = unknown, (false and unknown) = false, (unknown and unknown) = unknown – NOT: (not unknown) = unknown – “P is unknown” evaluates to true if predicate P evaluates to unknown ...
Chapter 14: Query Optimization
... In SQL, the inputs and outputs are multisets of tuples, and the multiset version of the relational algebra is used for evaluating SQL queries Example (a) name,title( dept_name=“Music”(instructor ⋈ (teaches ⋈ course)) ) ...
... In SQL, the inputs and outputs are multisets of tuples, and the multiset version of the relational algebra is used for evaluating SQL queries Example (a) name,title( dept_name=“Music”(instructor ⋈ (teaches ⋈ course)) ) ...
Managing database connections with JDBC
... database server. Thus, for example, the client needs database-specific code resulting in a tight coupling between the two tiers. This tight coupling has several advantages. First, it can decrease development time due to the fact the overall system is considerably simpler and smaller. Second, the tig ...
... database server. Thus, for example, the client needs database-specific code resulting in a tight coupling between the two tiers. This tight coupling has several advantages. First, it can decrease development time due to the fact the overall system is considerably simpler and smaller. Second, the tig ...
Oracle Database In-Memory
... astounding rate of billions of rows per second for each CPU core. Analytics that previously took hours or days to run now completes in seconds, enabling real-time business decisions. ...
... astounding rate of billions of rows per second for each CPU core. Analytics that previously took hours or days to run now completes in seconds, enabling real-time business decisions. ...
HP_Angle_Light_16x9_Blue
... An intelligence agency deploys NonStop SQL to manage 250++TB of database Driving mixed-workload consisting of 39,000 ingests per second concurrently with >5000 ad-hoc and OLAP queries Executing concurrent database maintenance activities ...
... An intelligence agency deploys NonStop SQL to manage 250++TB of database Driving mixed-workload consisting of 39,000 ingests per second concurrently with >5000 ad-hoc and OLAP queries Executing concurrent database maintenance activities ...
Chapter 4: SQL
... where depositor.account-number - account.accountnumber group by branch-name Note: Attributes in select clause outside of aggregate functions must appear in group by list ...
... where depositor.account-number - account.accountnumber group by branch-name Note: Attributes in select clause outside of aggregate functions must appear in group by list ...
Transaction Management
... lock on BY but has to wait because it is being held by TransactionB. Meanwhile TransactionB at time T7 requests for the exclusive lock for BX but has to wait because it is being held by TransactionA. Both these transactions cannot continue because each is waiting for a lock it cannot obtain until th ...
... lock on BY but has to wait because it is being held by TransactionB. Meanwhile TransactionB at time T7 requests for the exclusive lock for BX but has to wait because it is being held by TransactionA. Both these transactions cannot continue because each is waiting for a lock it cannot obtain until th ...
Chapter 21:Application Development and Administration
... Nodegroups can be defined to support table partitioning across a specific set of nodes in a multinode system → Flexibility in allocating table partitions ex) Large tables may be partitioned across all nodes in a system Small tables may reside on a single node ...
... Nodegroups can be defined to support table partitioning across a specific set of nodes in a multinode system → Flexibility in allocating table partitions ex) Large tables may be partitioned across all nodes in a system Small tables may reside on a single node ...
Data Integrity Constraints
... Use the NOVALIDATE constraint state when you do not want existing rows to be checked for compliance with a constraint The default states of a constraint are ENABLE, VALIDATE, INITIALLY IMMEDIATE, NOT DEFERRABLE, and NORELY Oracle9i Database Administrator: Implementation and Administration ...
... Use the NOVALIDATE constraint state when you do not want existing rows to be checked for compliance with a constraint The default states of a constraint are ENABLE, VALIDATE, INITIALLY IMMEDIATE, NOT DEFERRABLE, and NORELY Oracle9i Database Administrator: Implementation and Administration ...
Database Engines on Multicores, Why Parallelize When You Can
... Load interaction is an intrinsic feature of existing database engines that can only become worse with multicore. Similarly, fixing all synchronization problems in existing engines is a daunting task that probably requires major changes to the underlying architecture. The basic insight of Multimed is ...
... Load interaction is an intrinsic feature of existing database engines that can only become worse with multicore. Similarly, fixing all synchronization problems in existing engines is a daunting task that probably requires major changes to the underlying architecture. The basic insight of Multimed is ...
Database Security
... Savepoints are similarly useful in application programs. If a procedure contains several functions, then you can create a savepoint before each function begins. Then, if a function fails, it is easy to return the data to its state before the function began and re-run the function with revised parame ...
... Savepoints are similarly useful in application programs. If a procedure contains several functions, then you can create a savepoint before each function begins. Then, if a function fails, it is easy to return the data to its state before the function began and re-run the function with revised parame ...
ppt
... checked to see if they can now be granted If transaction aborts, all waiting or granted requests of the transaction are deleted lock manager may keep a list of locks held by each transaction, to implement this efficiently ...
... checked to see if they can now be granted If transaction aborts, all waiting or granted requests of the transaction are deleted lock manager may keep a list of locks held by each transaction, to implement this efficiently ...
mod-16
... checked to see if they can now be granted If transaction aborts, all waiting or granted requests of the transaction are deleted lock manager may keep a list of locks held by each transaction, to implement this efficiently ...
... checked to see if they can now be granted If transaction aborts, all waiting or granted requests of the transaction are deleted lock manager may keep a list of locks held by each transaction, to implement this efficiently ...
Chapter 1: Introduction
... // Returns: One row for each column; row has a number of attributes // such as COLUMN_NAME, TYPE_NAME ...
... // Returns: One row for each column; row has a number of attributes // such as COLUMN_NAME, TYPE_NAME ...
Chapter 4: SQL
... The fetch statement causes the values of one tuple in the query result to be placed on host language variables. EXEC SQL fetch c into :si, :sn END_EXEC Repeated calls to fetch get successive tuples in the query result A variable called SQLSTATE in the SQL communication area (SQLCA) gets set to ‘0200 ...
... The fetch statement causes the values of one tuple in the query result to be placed on host language variables. EXEC SQL fetch c into :si, :sn END_EXEC Repeated calls to fetch get successive tuples in the query result A variable called SQLSTATE in the SQL communication area (SQLCA) gets set to ‘0200 ...
Integrating with Fortis - Triangle Solutions Technology
... Add-on solutions use middleware code or database tools such as triggers to perform datarelated actions. An example of an add-on solution involves the use of database triggers to verify index data, or update and delete data. Triggers execute a specified set of code when certain actions are performed ...
... Add-on solutions use middleware code or database tools such as triggers to perform datarelated actions. An example of an add-on solution involves the use of database triggers to verify index data, or update and delete data. Triggers execute a specified set of code when certain actions are performed ...