function FileData_Pairs(x)
{
x.t("example","dept=");
x.t("example","dept");
x.t("example","city");
x.t("combinations","comparison");
x.t("retrieval","conditions");
x.t("retrieving","rows");
x.t("create","retrieval");
x.t("create","create");
x.t("create","indexes");
x.t("create","three");
x.t("create","row");
x.t("create","index");
x.t("create","using");
x.t("create","deciding");
x.t("table","common");
x.t("table","better");
x.t("table","retrieve");
x.t("table","consider");
x.t("table","inserting");
x.t("deleting","rows");
x.t("inserts","updates");
x.t("build","concatenated");
x.t("improve","performance");
x.t("few","rules");
x.t("dept=","d101");
x.t("tables","thus");
x.t("field","time");
x.t("field","want");
x.t("field","improves");
x.t("field","comparison");
x.t("field","last_name");
x.t("field","hire_date");
x.t("field","perhaps");
x.t("look","combinations");
x.t("look","further");
x.t("state","build");
x.t("state","fields");
x.t("deletes","may");
x.t("delete","rows");
x.t("time","example");
x.t("down","performance");
x.t("multiple","fields");
x.t("updates","deletes");
x.t("want","index");
x.t("details","few");
x.t("indexes","create");
x.t("indexes","improve");
x.t("indexes","dept");
x.t("indexes","modifying");
x.t("indexes","database");
x.t("indexes","modifications");
x.t("indexes","deciding");
x.t("indexes","associated");
x.t("need","create");
x.t("improves","performance");
x.t("assume","employee");
x.t("large","number");
x.t("common","operations");
x.t("maintain","indexes");
x.t("name","field");
x.t("name","department");
x.t("dept","field");
x.t("dept","d101");
x.t("performance","example");
x.t("performance","row");
x.t("performance","driver");
x.t("performance","therefore");
x.t("performance","retrievals");
x.t("performance","conditions");
x.t("comparison","operators");
x.t("comparison","operator");
x.t("updating","deleting");
x.t("further","define");
x.t("useful","retrieving");
x.t("modifying","large");
x.t("decide","indexes");
x.t("fields","look");
x.t("fields","details");
x.t("fields","indexing");
x.t("fields","row");
x.t("fields","index");
x.t("three","indexes");
x.t("contain","comparison");
x.t("concatenated","index");
x.t("{01/30/89}","index");
x.t("{01/30/89}","exempt");
x.t("operators","index");
x.t("raleigh","state");
x.t("fewer","indexes");
x.t("number","rows");
x.t("better","performance");
x.t("retrieve","rows");
x.t("indexing","multiple");
x.t("may","efficient");
x.t("define","criteria");
x.t("combination","fields");
x.t("row","inserts");
x.t("row","retrievals");
x.t("index","improve");
x.t("index","dept");
x.t("index","useful");
x.t("index","fields");
x.t("index","concatenates");
x.t("index","help");
x.t("index","city");
x.t("index","conditions");
x.t("first_name","fields");
x.t("grouped","example");
x.t("grouped","index");
x.t("rows","retrieving");
x.t("rows","create");
x.t("rows","look");
x.t("rows","fewer");
x.t("rows","often");
x.t("rows","re-create");
x.t("rows","based");
x.t("often","retrieve");
x.t("often","insert");
x.t("thus","slowing");
x.t("hire","date");
x.t("database","table");
x.t("database","tables");
x.t("consider","table");
x.t("rules","help");
x.t("re-create","indexes");
x.t("last_name","field");
x.t("last_name","first_name");
x.t("concatenates","last_name");
x.t("hire_date","field");
x.t("hire_date","{01/30/89}");
x.t("slowing","down");
x.t("perhaps","retrievals");
x.t("department","hire");
x.t("drop","indexes");
x.t("help","performance");
x.t("help","decide");
x.t("employee","name");
x.t("employee","database");
x.t("case","index");
x.t("efficient","drop");
x.t("modifications","often");
x.t("city","field");
x.t("city","state");
x.t("city","raleigh");
x.t("date","create");
x.t("inserting","updating");
x.t("based","field");
x.t("based","name");
x.t("based","combination");
x.t("based","employee");
x.t("based","city");
x.t("using","indexes");
x.t("deciding","indexes");
x.t("criteria","retrieving");
x.t("exempt","case");
x.t("operations","table");
x.t("associated","table");
x.t("driver","maintain");
x.t("operator","example");
x.t("operator","conditions");
x.t("therefore","need");
x.t("insert","update");
x.t("retrievals","assume");
x.t("retrievals","based");
x.t("d101","create");
x.t("d101","hire_date");
x.t("conditions","example");
x.t("conditions","contain");
x.t("conditions","grouped");
x.t("update","delete");
}