Get yourself trained on [1Z0-071 OCA Step1] with this Online Training [1Z0-071 OCA Step1] Oracle Database 12c SQL.
Online Training [1Z0-071 OCA Step1] Oracle Database 12c SQL
Each topic is covered minutely:Oracle and Structured Query Language (SQL)Identify the connection between an ERD and a Relational DatabaseExplain the relationship between a database and SQLDescribe the purpose of DDLDescribe the purpose of DMLBuild a SELECT statement to retrieve data from an Oracle Database tableRestricting and Sorting DataUse the ORDER BY clause to sort SQL query resultsLimit the rows that are retrieved by a queryUse ampersand substitution to restrict and sort output at runtimeUse SQL row limiting clauseUsing Single-Row Functions to Customize OutputUse various types of functions available in SQLUse character, number, and date and analytical (PERCENTILE_CONT, STDDEV, LAG, LEAD) functions in SELECT statementsUsing Conversion Functions and Conditional ExpressionsDescribe various types of conversion functions that are available in SQLUse the TO_CHAR, TO_NUMBER, and TO_DATE conversion functionsApply general functions and conditional expressions in a SELECT statementReporting Aggregated Data Using the Group FunctionsDescribe the use of group functionsGroup data by using the GROUP BY clauseInclude or exclude grouped rows by using the HAVING clauseDisplaying Data from Multiple TablesDescribe the different types of joins and their featuresUse SELECT statements to access data from more than one table using equijoins and nonequijoinsJoin a table to itself by using a self-joinView data that generally does not meet a join condition by using outer joinsUsing Subqueries to Solve QueriesDefine subqueriesDescribe the types of problems subqueries can solveDescribe the types of subqueriesQuery data using correlated subqueriesUpdate and delete rows using correlated subqueriesUse the EXISTS and NOT EXISTS operatorsUse the WITH clauseUse single-row and multiple-row subqueriesUsing the Set OperatorsDescribe set operatorsUse a set operator to combine multiple queries into a single queryControl the order of rows returnedManipulating DataTruncate dataInsert rows into a tableUpdate rows in a tableDelete rows from a tableControl transactionsUsing DDL Statements to Create and Manage TablesDescribe data types that are available for columnsCreate a simple tableCreate constraints for tablesDrop columns and set column UNUSEDCreate and use external tablesManaging Objects with Data Dictionary ViewsQuery various data dictionary viewsControlling User AccessDifferentiate system privileges from object privilegesGrant privileges on tables and on a userDistinguish between privileges and rolesManaging Schema ObjectsDescribe how schema objects workCreate simple and complex views with visible/invisible columnsCreate, maintain and use sequencesCreate and maintain indexes including invisible indexes and multiple indexes on the same columnsPerform flashback operationsManipulating Large Data SetsDescribe the features of multitable INSERTsMerge rows in a table
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As a society, we spend hundreds of billions of dollars measuring the return on our financial assets. Yet, at the same time, we still haven’t found convincing ways of measuring the return on our investments in developing people.
And I get it: If my bank account pays me 1% a year, I can measure it to the penny. We’ve been collectively trained to expect neat and precise ROI calculations on everything, so when it’s applied to something as seemingly squishy as how effectively people are learning in the workplace, the natural inclination is to throw up our hands and say it can’t be done. But we need to figure this out. In a world where skills beat capital, the winners and losers of the next 30 years will be determined by their ability to attract and develop great talent.
Fortunately, corporate learning & development (L&D), like most business functions, is evolving quickly. We can embrace some level of ambiguity and have rigor when measuring the ROI of learning. It just might look a little different than an M.B.A. would expect to see in an Excel model.